# Shadcn Radar Chart

> Free shadcn/ui radar chart for React — built on Recharts and themed with CSS variables. Filled, dots, lines-only, multiple series, and circular-grid variants, plus loading, empty, and accessible states.

Source: https://designrevision.com/components/radar-chart

The **Shadcn Radar Chart** is a <a href="https://recharts.org/" rel="nofollow">Recharts</a> `RadarChart` wrapped in the shadcn `ChartContainer` — themed with your `--chart` CSS variables and dark-mode-ready. It plots several metrics on a shared scale around a circle, ideal for **multi-axis profiles** — skills, features, competitor scores. Below: filled, dots, lines-only, multiple series, and a circular-grid variant, plus the production states.

## The basic radar chart

```tsx
const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies ChartConfig

<ChartContainer config={chartConfig} className="mx-auto aspect-square max-h-[250px]">
  <RadarChart data={chartData}>
    <ChartTooltip cursor={false} content={<ChartTooltipContent />} />
    <PolarAngleAxis dataKey="month" />
    <PolarGrid />
    <Radar dataKey="desktop" fill="var(--color-desktop)" fillOpacity={0.6} />
  </RadarChart>
</ChartContainer>
```

`PolarAngleAxis` draws the spokes (one per data row), `PolarGrid` the rings, and `Radar` the filled profile.

## Multiple series

Overlay one `<Radar>` per series and add a legend — keep `fillOpacity` low so the shapes read through each other:

```tsx
<Radar dataKey="desktop" fill="var(--color-desktop)" fillOpacity={0.6} />
<Radar dataKey="mobile"  fill="var(--color-mobile)"  fillOpacity={0.6} />
<ChartLegend content={<ChartLegendContent />} />
```

## Variants

- **Dots** — `dot={{ r: 4, fillOpacity: 1 }}` marks each vertex.
- **Lines only** — `fillOpacity={0}` + a `stroke` gives just the outline (pair with `PolarGrid radialLines={false}`).
- **Circular grid** — `PolarGrid gridType="circle"` swaps the polygon rings for circles.

## Production states

Loading (circular skeleton), empty (icon + message), and accessible (`role`/`aria-label` + data-table fallback) variants are included.

See **[Shadcn Charts](/components/chart)** for the theming system, dark mode, and the other chart types.

## Installation

### chart

**Install:**

```bash
npx shadcn@latest add @designrevision/chart
```

**Dependencies:** recharts, utils, card

**Props**

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| config * | ChartConfig | — | Maps each data key to { label, icon?, color }. Colors become --color-<key> CSS vars. |
| children * | React.ReactElement (a Recharts chart) | — | A single Recharts chart (BarChart, LineChart, …) — ChartContainer wraps it in a ResponsiveContainer. |

`*` required.

**Usage & accessibility:** A Recharts wrapper themed with CSS variables. Pass a `config` (ChartConfig: each data key → { label, icon?, color }) to <ChartContainer>; it injects --color-<key> vars (scoped per light/dark theme) that your Recharts series reference as fill="var(--color-desktop)". Use <ChartTooltip content={<ChartTooltipContent />}> and <ChartLegend content={<ChartLegendContent />}> for themed tooltips/legends. Colors default to the --chart-1..5 tokens, which re-theme automatically in dark mode. The container needs a height — keep aspect-video / min-h-* or ResponsiveContainer measures 0. This is the base primitive; the Bar/Line/Area/Pie/Radar/Radial chart pages compose it.

```tsx
// components/ui/chart.tsx
"use client"

import * as React from "react"
import * as RechartsPrimitive from "recharts"

import { cn } from "@/lib/utils"

// Format: { THEME_NAME: CSS_SELECTOR }
const THEMES = { light: "", dark: ".dark" } as const

export type ChartConfig = {
  [k in string]: {
    label?: React.ReactNode
    icon?: React.ComponentType
  } & (
    | { color?: string; theme?: never }
    | { color?: never; theme: Record<keyof typeof THEMES, string> }
  )
}

type ChartContextProps = {
  config: ChartConfig
}

const ChartContext = React.createContext<ChartContextProps | null>(null)

function useChart() {
  const context = React.useContext(ChartContext)

  if (!context) {
    throw new Error("useChart must be used within a <ChartContainer />")
  }

  return context
}

function ChartContainer({
  id,
  className,
  children,
  config,
  ...props
}: React.ComponentProps<"div"> & {
  config: ChartConfig
  children: React.ComponentProps<
    typeof RechartsPrimitive.ResponsiveContainer
  >["children"]
}) {
  const uniqueId = React.useId()
  const chartId = `chart-${id || uniqueId.replace(/:/g, "")}`

  return (
    <ChartContext.Provider value={{ config }}>
      <div
        data-slot="chart"
        data-chart={chartId}
        className={cn(
          "[&_.recharts-cartesian-axis-tick_text]:fill-muted-foreground [&_.recharts-cartesian-grid_line[stroke='#ccc']]:stroke-border/50 [&_.recharts-curve.recharts-tooltip-cursor]:stroke-border [&_.recharts-polar-grid_[stroke='#ccc']]:stroke-border [&_.recharts-radial-bar-background-sector]:fill-muted [&_.recharts-rectangle.recharts-tooltip-cursor]:fill-muted [&_.recharts-reference-line_[stroke='#ccc']]:stroke-border flex aspect-video justify-center text-xs [&_.recharts-dot[stroke='#fff']]:stroke-transparent [&_.recharts-layer]:outline-hidden [&_.recharts-sector]:outline-hidden [&_.recharts-sector[stroke='#fff']]:stroke-transparent [&_.recharts-surface]:outline-hidden",
          className
        )}
        {...props}
      >
        <ChartStyle id={chartId} config={config} />
        <RechartsPrimitive.ResponsiveContainer>
          {children}
        </RechartsPrimitive.ResponsiveContainer>
      </div>
    </ChartContext.Provider>
  )
}

const ChartStyle = ({ id, config }: { id: string; config: ChartConfig }) => {
  const colorConfig = Object.entries(config).filter(
    ([, config]) => config.theme || config.color
  )

  if (!colorConfig.length) {
    return null
  }

  return (
    <style
      dangerouslySetInnerHTML={{
        __html: Object.entries(THEMES)
          .map(
            ([theme, prefix]) => `
${prefix} [data-chart=${id}] {
${colorConfig
  .map(([key, itemConfig]) => {
    const color =
      itemConfig.theme?.[theme as keyof typeof itemConfig.theme] ||
      itemConfig.color
    return color ? `  --color-${key}: ${color};` : null
  })
  .join("\n")}
}
`
          )
          .join("\n"),
      }}
    />
  )
}

const ChartTooltip = RechartsPrimitive.Tooltip

function ChartTooltipContent({
  active,
  payload,
  className,
  indicator = "dot",
  hideLabel = false,
  hideIndicator = false,
  label,
  labelFormatter,
  labelClassName,
  formatter,
  color,
  nameKey,
  labelKey,
}: React.ComponentProps<typeof RechartsPrimitive.Tooltip> &
  React.ComponentProps<"div"> & {
    hideLabel?: boolean
    hideIndicator?: boolean
    indicator?: "line" | "dot" | "dashed"
    nameKey?: string
    labelKey?: string
  }) {
  const { config } = useChart()

  const tooltipLabel = React.useMemo(() => {
    if (hideLabel || !payload?.length) {
      return null
    }

    const [item] = payload
    const key = `${labelKey || item?.dataKey || item?.name || "value"}`
    const itemConfig = getPayloadConfigFromPayload(config, item, key)
    const value =
      !labelKey && typeof label === "string"
        ? config[label as keyof typeof config]?.label || label
        : itemConfig?.label

    if (labelFormatter) {
      return (
        <div className={cn("font-medium", labelClassName)}>
          {labelFormatter(value, payload)}
        </div>
      )
    }

    if (!value) {
      return null
    }

    return <div className={cn("font-medium", labelClassName)}>{value}</div>
  }, [
    label,
    labelFormatter,
    payload,
    hideLabel,
    labelClassName,
    config,
    labelKey,
  ])

  if (!active || !payload?.length) {
    return null
  }

  const nestLabel = payload.length === 1 && indicator !== "dot"

  return (
    <div
      className={cn(
        "border-border/50 bg-background grid min-w-[8rem] items-start gap-1.5 rounded-lg border px-2.5 py-1.5 text-xs shadow-xl",
        className
      )}
    >
      {!nestLabel ? tooltipLabel : null}
      <div className="grid gap-1.5">
        {payload
          .filter((item) => item.type !== "none")
          .map((item, index) => {
            const key = `${nameKey || item.name || item.dataKey || "value"}`
            const itemConfig = getPayloadConfigFromPayload(config, item, key)
            const indicatorColor = color || item.payload.fill || item.color

            return (
              <div
                key={item.dataKey}
                className={cn(
                  "[&>svg]:text-muted-foreground flex w-full flex-wrap items-stretch gap-2 [&>svg]:h-2.5 [&>svg]:w-2.5",
                  indicator === "dot" && "items-center"
                )}
              >
                {formatter && item?.value !== undefined && item.name ? (
                  formatter(item.value, item.name, item, index, item.payload)
                ) : (
                  <>
                    {itemConfig?.icon ? (
                      <itemConfig.icon />
                    ) : (
                      !hideIndicator && (
                        <div
                          className={cn(
                            "shrink-0 rounded-[2px] border-(--color-border) bg-(--color-bg)",
                            {
                              "h-2.5 w-2.5": indicator === "dot",
                              "w-1": indicator === "line",
                              "w-0 border-[1.5px] border-dashed bg-transparent":
                                indicator === "dashed",
                              "my-0.5": nestLabel && indicator === "dashed",
                            }
                          )}
                          style={
                            {
                              "--color-bg": indicatorColor,
                              "--color-border": indicatorColor,
                            } as React.CSSProperties
                          }
                        />
                      )
                    )}
                    <div
                      className={cn(
                        "flex flex-1 justify-between leading-none",
                        nestLabel ? "items-end" : "items-center"
                      )}
                    >
                      <div className="grid gap-1.5">
                        {nestLabel ? tooltipLabel : null}
                        <span className="text-muted-foreground">
                          {itemConfig?.label || item.name}
                        </span>
                      </div>
                      {item.value && (
                        <span className="text-foreground font-mono font-medium tabular-nums">
                          {item.value.toLocaleString()}
                        </span>
                      )}
                    </div>
                  </>
                )}
              </div>
            )
          })}
      </div>
    </div>
  )
}

const ChartLegend = RechartsPrimitive.Legend

function ChartLegendContent({
  className,
  hideIcon = false,
  payload,
  verticalAlign = "bottom",
  nameKey,
}: React.ComponentProps<"div"> &
  Pick<RechartsPrimitive.LegendProps, "payload" | "verticalAlign"> & {
    hideIcon?: boolean
    nameKey?: string
  }) {
  const { config } = useChart()

  if (!payload?.length) {
    return null
  }

  return (
    <div
      className={cn(
        "flex items-center justify-center gap-4",
        verticalAlign === "top" ? "pb-3" : "pt-3",
        className
      )}
    >
      {payload
        .filter((item) => item.type !== "none")
        .map((item) => {
          const key = `${nameKey || item.dataKey || "value"}`
          const itemConfig = getPayloadConfigFromPayload(config, item, key)

          return (
            <div
              key={item.value}
              className={cn(
                "[&>svg]:text-muted-foreground flex items-center gap-1.5 [&>svg]:h-3 [&>svg]:w-3"
              )}
            >
              {itemConfig?.icon && !hideIcon ? (
                <itemConfig.icon />
              ) : (
                <div
                  className="h-2 w-2 shrink-0 rounded-[2px]"
                  style={{
                    backgroundColor: item.color,
                  }}
                />
              )}
              {itemConfig?.label}
            </div>
          )
        })}
    </div>
  )
}

// Helper to extract item config from a payload.
function getPayloadConfigFromPayload(
  config: ChartConfig,
  payload: unknown,
  key: string
) {
  if (typeof payload !== "object" || payload === null) {
    return undefined
  }

  const payloadPayload =
    "payload" in payload &&
    typeof payload.payload === "object" &&
    payload.payload !== null
      ? payload.payload
      : undefined

  let configLabelKey: string = key

  if (
    key in payload &&
    typeof payload[key as keyof typeof payload] === "string"
  ) {
    configLabelKey = payload[key as keyof typeof payload] as string
  } else if (
    payloadPayload &&
    key in payloadPayload &&
    typeof payloadPayload[key as keyof typeof payloadPayload] === "string"
  ) {
    configLabelKey = payloadPayload[
      key as keyof typeof payloadPayload
    ] as string
  }

  return configLabelKey in config
    ? config[configLabelKey]
    : config[key as keyof typeof config]
}

export {
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
  ChartLegend,
  ChartLegendContent,
  ChartStyle,
}
```

## Examples

### Radar Chart

The canonical single filled series over a polar grid.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-demo-01
```

**Dependencies:** recharts, chart, card

```tsx
// components/ui/radar-chart-demo-01.tsx
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186 },
  { month: "February", desktop: 305 },
  { month: "March", desktop: 237 },
  { month: "April", desktop: 273 },
  { month: "May", desktop: 209 },
  { month: "June", desktop: 214 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies ChartConfig

export default function RadarChartDemo01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Radar Chart</CardTitle>
        <CardDescription>January - June 2024</CardDescription>
      </CardHeader>
      <CardContent className="pb-0">
        <ChartContainer
          config={chartConfig}
          className="mx-auto aspect-square max-h-[250px]"
        >
          <RadarChart data={chartData}>
            <ChartTooltip cursor={false} content={<ChartTooltipContent />} />
            <PolarAngleAxis dataKey="month" />
            <PolarGrid />
            <Radar
              dataKey="desktop"
              fill="var(--color-desktop)"
              fillOpacity={0.6}
            />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

---

### With dots

A filled radar with a dot marker on each vertex.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-dots-01
```

**Dependencies:** recharts, chart, card

```tsx
// components/ui/radar-chart-dots-01.tsx
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186 },
  { month: "February", desktop: 305 },
  { month: "March", desktop: 237 },
  { month: "April", desktop: 273 },
  { month: "May", desktop: 209 },
  { month: "June", desktop: 214 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies ChartConfig

export default function RadarChartDots01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Radar Chart — Dots</CardTitle>
        <CardDescription>January - June 2024</CardDescription>
      </CardHeader>
      <CardContent className="pb-0">
        <ChartContainer
          config={chartConfig}
          className="mx-auto aspect-square max-h-[250px]"
        >
          <RadarChart data={chartData}>
            <ChartTooltip cursor={false} content={<ChartTooltipContent />} />
            <PolarAngleAxis dataKey="month" />
            <PolarGrid />
            <Radar
              dataKey="desktop"
              fill="var(--color-desktop)"
              fillOpacity={0.6}
              dot={{ r: 4, fillOpacity: 1 }}
            />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

---

### Lines only

An unfilled radar — just the stroked outline.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-lines-01
```

**Dependencies:** recharts, chart, card

```tsx
// components/ui/radar-chart-lines-01.tsx
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186 },
  { month: "February", desktop: 305 },
  { month: "March", desktop: 237 },
  { month: "April", desktop: 273 },
  { month: "May", desktop: 209 },
  { month: "June", desktop: 214 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies ChartConfig

export default function RadarChartLines01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Radar Chart — Lines Only</CardTitle>
        <CardDescription>January - June 2024</CardDescription>
      </CardHeader>
      <CardContent className="pb-0">
        <ChartContainer
          config={chartConfig}
          className="mx-auto aspect-square max-h-[250px]"
        >
          <RadarChart data={chartData}>
            <ChartTooltip cursor={false} content={<ChartTooltipContent />} />
            <PolarAngleAxis dataKey="month" />
            <PolarGrid radialLines={false} />
            <Radar
              dataKey="desktop"
              fill="var(--color-desktop)"
              fillOpacity={0}
              stroke="var(--color-desktop)"
              strokeWidth={2}
            />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

---

### Multiple series

Two overlaid radar series with a legend — comparing two profiles.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-multiple-01
```

**Dependencies:** recharts, chart, card

```tsx
// components/ui/radar-chart-multiple-01.tsx
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartLegend,
  ChartLegendContent,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186, mobile: 80 },
  { month: "February", desktop: 305, mobile: 200 },
  { month: "March", desktop: 237, mobile: 120 },
  { month: "April", desktop: 273, mobile: 190 },
  { month: "May", desktop: 209, mobile: 130 },
  { month: "June", desktop: 214, mobile: 140 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
  mobile: { label: "Mobile", color: "var(--chart-2)" },
} satisfies ChartConfig

export default function RadarChartMultiple01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Radar Chart — Multiple</CardTitle>
        <CardDescription>January - June 2024</CardDescription>
      </CardHeader>
      <CardContent className="pb-0">
        <ChartContainer
          config={chartConfig}
          className="mx-auto aspect-square max-h-[250px]"
        >
          <RadarChart data={chartData}>
            <ChartTooltip cursor={false} content={<ChartTooltipContent indicator="line" />} />
            <PolarAngleAxis dataKey="month" />
            <PolarGrid />
            <Radar
              dataKey="desktop"
              fill="var(--color-desktop)"
              fillOpacity={0.6}
            />
            <Radar dataKey="mobile" fill="var(--color-mobile)" fillOpacity={0.6} />
            <ChartLegend className="mt-8" content={<ChartLegendContent />} />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

---

### Circular grid

A circular polar grid (`gridType="circle"`) instead of the default polygon.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-grid-01
```

**Dependencies:** recharts, chart, card

```tsx
// components/ui/radar-chart-grid-01.tsx
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186 },
  { month: "February", desktop: 305 },
  { month: "March", desktop: 237 },
  { month: "April", desktop: 273 },
  { month: "May", desktop: 209 },
  { month: "June", desktop: 214 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies ChartConfig

export default function RadarChartGrid01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Radar Chart — Circular Grid</CardTitle>
        <CardDescription>January - June 2024</CardDescription>
      </CardHeader>
      <CardContent className="pb-0">
        <ChartContainer
          config={chartConfig}
          className="mx-auto aspect-square max-h-[250px]"
        >
          <RadarChart data={chartData}>
            <ChartTooltip cursor={false} content={<ChartTooltipContent />} />
            <PolarGrid gridType="circle" />
            <PolarAngleAxis dataKey="month" />
            <Radar
              dataKey="desktop"
              fill="var(--color-desktop)"
              fillOpacity={0.6}
              dot={{ r: 4, fillOpacity: 1 }}
            />
          </RadarChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```

---

### Loading state

A circular skeleton while data loads.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-loading-01
```

**Dependencies:** card, skeleton

```tsx
// components/ui/radar-chart-loading-01.tsx
import { Card, CardContent, CardHeader } from "@/components/ui/card"
import { Skeleton } from "@/components/ui/skeleton"

// A loading state for a radar chart — a circular skeleton.
export default function RadarChartLoading01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center gap-2 pb-4">
        <Skeleton className="h-5 w-28" />
        <Skeleton className="h-4 w-36" />
      </CardHeader>
      <CardContent className="flex flex-1 items-center justify-center pb-6">
        <Skeleton className="aspect-square size-[210px] rounded-full" />
      </CardContent>
    </Card>
  )
}
```

---

### Empty state

A graceful no-data state with a radar icon.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-empty-01
```

**Dependencies:** lucide-react, card

```tsx
// components/ui/radar-chart-empty-01.tsx
import { Radar } from "lucide-react"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"

export default function RadarChartEmpty01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Radar Chart</CardTitle>
        <CardDescription>January - June 2024</CardDescription>
      </CardHeader>
      <CardContent className="flex flex-1 items-center justify-center pb-6">
        <div className="flex aspect-square w-full max-w-[230px] flex-col items-center justify-center gap-2 rounded-full border border-dashed text-center">
          <Radar className="text-muted-foreground size-8" />
          <div className="text-sm font-medium">No data</div>
          <p className="text-muted-foreground max-w-[12rem] text-xs">
            There are no metrics to compare yet.
          </p>
        </div>
      </CardContent>
    </Card>
  )
}
```

---

### Accessible

role/aria-label with a screen-reader data-table fallback.

**Install:**

```bash
npx shadcn@latest add @designrevision/radar-chart-a11y-01
```

**Dependencies:** recharts, chart, card

```tsx
// components/ui/radar-chart-a11y-01.tsx
"use client"

import { PolarAngleAxis, PolarGrid, Radar, RadarChart } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186 },
  { month: "February", desktop: 305 },
  { month: "March", desktop: 237 },
  { month: "April", desktop: 273 },
  { month: "May", desktop: 209 },
  { month: "June", desktop: 214 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
} satisfies ChartConfig

export default function RadarChartA11y01() {
  return (
    <Card className="flex w-full max-w-sm flex-col">
      <CardHeader className="items-center pb-4">
        <CardTitle>Accessible Radar Chart</CardTitle>
        <CardDescription>Monthly profile, with a data table</CardDescription>
      </CardHeader>
      <CardContent className="pb-0">
        <ChartContainer
          config={chartConfig}
          className="mx-auto aspect-square max-h-[250px]"
          role="img"
          aria-label="Radar chart of desktop visitors across six months, ranging from 186 in January to 305 in February."
        >
          <RadarChart data={chartData}>
            <ChartTooltip cursor={false} content={<ChartTooltipContent />} />
            <PolarAngleAxis dataKey="month" />
            <PolarGrid />
            <Radar
              dataKey="desktop"
              fill="var(--color-desktop)"
              fillOpacity={0.6}
            />
          </RadarChart>
        </ChartContainer>

        {/* Visually-hidden data-table fallback for assistive technology. */}
        <table className="sr-only">
          <caption>Desktop visitors by month</caption>
          <thead>
            <tr>
              <th scope="col">Month</th>
              <th scope="col">Visitors</th>
            </tr>
          </thead>
          <tbody>
            {chartData.map((row) => (
              <tr key={row.month}>
                <th scope="row">{row.month}</th>
                <td>{row.desktop}</td>
              </tr>
            ))}
          </tbody>
        </table>
      </CardContent>
    </Card>
  )
}
```