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Crimson shadcn theme

Bold crimson red for a confident, high-energy shadcn/ui theme.

Open in the editor Browse all themes

Install with the shadcn CLI

npx shadcn@latest add https://designrevision.com/r/themes/crimson.json

Or copy the globals.css below and paste the :root / .dark blocks into your project.

Live preview

Light
The quick brown fox
Every element here is painted by the theme tokens.
Primary Secondary Outline Destructive
Badge Accent Muted
Overview
Dark
The quick brown fox
Every element here is painted by the theme tokens.
Primary Secondary Outline Destructive
Badge Accent Muted
Overview

globals.css

@import "tailwindcss";

@custom-variant dark (&:is(.dark *));

:root {
  --background: oklch(0.995 0.0016 20);
  --foreground: oklch(0.205 0.0192 20);
  --card: oklch(0.995 0.0016 20);
  --card-foreground: oklch(0.205 0.0192 20);
  --popover: oklch(0.995 0.0016 20);
  --popover-foreground: oklch(0.205 0.0192 20);
  --primary: oklch(0.55 0.1992 20);
  --primary-foreground: oklch(0.985 0.0064 20);
  --secondary: oklch(0.968 0.0072 20);
  --secondary-foreground: oklch(0.205 0.0192 20);
  --muted: oklch(0.968 0.0072 20);
  --muted-foreground: oklch(0.5487 0.0292 20);
  --accent: oklch(0.96 0.0198 40);
  --accent-foreground: oklch(0.205 0.0192 40);
  --destructive: oklch(0.5843 0.2192 27);
  --destructive-foreground: oklch(1 0 27);
  --border: oklch(0.922 0.0072 20);
  --input: oklch(0.922 0.0072 20);
  --ring: oklch(0.55 0.1992 20);
  --chart-1: oklch(0.62 0.1492 20);
  --chart-2: oklch(0.68 0.1492 60);
  --chart-3: oklch(0.62 0.1281 100);
  --chart-4: oklch(0.68 0.1225 180);
  --chart-5: oklch(0.62 0.1492 260);
  --sidebar: oklch(0.995 0.0016 20);
  --sidebar-foreground: oklch(0.205 0.0192 20);
  --sidebar-primary: oklch(0.55 0.1992 20);
  --sidebar-primary-foreground: oklch(0.985 0.0064 20);
  --sidebar-accent: oklch(0.96 0.0198 40);
  --sidebar-accent-foreground: oklch(0.205 0.0192 40);
  --sidebar-border: oklch(0.922 0.0072 20);
  --sidebar-ring: oklch(0.55 0.1992 20);
  --font-sans: Inter, ui-sans-serif, system-ui, sans-serif;
  --font-serif: Source Serif 4, ui-serif, Georgia, serif;
  --font-mono: JetBrains Mono, ui-monospace, SFMono-Regular, monospace;
  --radius: 0.625rem;
  --shadow-x: 0px;
  --shadow-y: 1px;
  --shadow-blur: 3px;
  --shadow-spread: 0px;
  --shadow-opacity: 0.1;
  --shadow-color: oklch(0 0 0);
  --shadow-2xs: 0px 1px 3px 0px hsl(0 0% 0% / 0.05);
  --shadow-xs: 0px 1px 3px 0px hsl(0 0% 0% / 0.05);
  --shadow-sm: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 1px 2px -1px hsl(0 0% 0% / 0.10);
  --shadow: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 1px 2px -1px hsl(0 0% 0% / 0.10);
  --shadow-md: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 2px 4px -1px hsl(0 0% 0% / 0.10);
  --shadow-lg: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 4px 6px -1px hsl(0 0% 0% / 0.10);
  --shadow-xl: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 8px 10px -1px hsl(0 0% 0% / 0.10);
  --shadow-2xl: 0px 1px 3px 0px hsl(0 0% 0% / 0.25);
  --spacing: 0.25rem;
}

.dark {
  --background: oklch(0.16 0.0072 20);
  --foreground: oklch(0.985 0.0064 20);
  --card: oklch(0.205 0.0112 20);
  --card-foreground: oklch(0.985 0.0064 20);
  --popover: oklch(0.205 0.0112 20);
  --popover-foreground: oklch(0.985 0.0064 20);
  --primary: oklch(0.62 0.1992 20);
  --primary-foreground: oklch(0.185 0.0192 20);
  --secondary: oklch(0.27 0.0112 20);
  --secondary-foreground: oklch(0.985 0.0064 20);
  --muted: oklch(0.27 0.0112 20);
  --muted-foreground: oklch(0.985 0.0064 20);
  --accent: oklch(0.31 0.0292 40);
  --accent-foreground: oklch(0.985 0.0068 40);
  --destructive: oklch(0.581 0.1892 22);
  --destructive-foreground: oklch(1 0 22);
  --border: oklch(0.28 0.0112 20);
  --input: oklch(0.28 0.0112 20);
  --ring: oklch(0.62 0.1992 20);
  --chart-1: oklch(0.7 0.1692 20);
  --chart-2: oklch(0.74 0.1692 60);
  --chart-3: oklch(0.7 0.1447 100);
  --chart-4: oklch(0.74 0.1334 180);
  --chart-5: oklch(0.7 0.1566 260);
  --sidebar: oklch(0.16 0.0072 20);
  --sidebar-foreground: oklch(0.985 0.0064 20);
  --sidebar-primary: oklch(0.62 0.1992 20);
  --sidebar-primary-foreground: oklch(0.185 0.0192 20);
  --sidebar-accent: oklch(0.31 0.0292 40);
  --sidebar-accent-foreground: oklch(0.985 0.0068 40);
  --sidebar-border: oklch(0.28 0.0112 20);
  --sidebar-ring: oklch(0.62 0.1992 20);
  --font-sans: Inter, ui-sans-serif, system-ui, sans-serif;
  --font-serif: Source Serif 4, ui-serif, Georgia, serif;
  --font-mono: JetBrains Mono, ui-monospace, SFMono-Regular, monospace;
  --radius: 0.625rem;
  --shadow-x: 0px;
  --shadow-y: 1px;
  --shadow-blur: 3px;
  --shadow-spread: 0px;
  --shadow-opacity: 0.1;
  --shadow-color: oklch(0 0 0);
  --shadow-2xs: 0px 1px 3px 0px hsl(0 0% 0% / 0.05);
  --shadow-xs: 0px 1px 3px 0px hsl(0 0% 0% / 0.05);
  --shadow-sm: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 1px 2px -1px hsl(0 0% 0% / 0.10);
  --shadow: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 1px 2px -1px hsl(0 0% 0% / 0.10);
  --shadow-md: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 2px 4px -1px hsl(0 0% 0% / 0.10);
  --shadow-lg: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 4px 6px -1px hsl(0 0% 0% / 0.10);
  --shadow-xl: 0px 1px 3px 0px hsl(0 0% 0% / 0.10), 0px 8px 10px -1px hsl(0 0% 0% / 0.10);
  --shadow-2xl: 0px 1px 3px 0px hsl(0 0% 0% / 0.25);
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);
  --color-chart-1: var(--chart-1);
  --color-chart-2: var(--chart-2);
  --color-chart-3: var(--chart-3);
  --color-chart-4: var(--chart-4);
  --color-chart-5: var(--chart-5);
  --color-sidebar: var(--sidebar);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-ring: var(--sidebar-ring);

  --font-sans: var(--font-sans);
  --font-mono: var(--font-mono);
  --font-serif: var(--font-serif);

  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --shadow-2xs: var(--shadow-2xs);
  --shadow-xs: var(--shadow-xs);
  --shadow-sm: var(--shadow-sm);
  --shadow: var(--shadow);
  --shadow-md: var(--shadow-md);
  --shadow-lg: var(--shadow-lg);
  --shadow-xl: var(--shadow-xl);
  --shadow-2xl: var(--shadow-2xl);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }
  body {
    @apply bg-background text-foreground;
  }
}

More shadcn themes

Default
Dark
Light
Minimal
Mono
Slate

Frequently asked questions

Is the Crimson theme free?

Yes — every shadcn theme here is free to use with no signup. Copy the CSS or install via the shadcn CLI.

How do I install it?

Run the shadcn CLI command above, or copy the globals.css and paste its :root and .dark blocks into your project. It's Tailwind v4 + OKLCH; use the generator's Code panel for a Tailwind v3 version.

Does it include a dark mode?

Yes. Every theme ships accessible, contrast-checked light and dark modes — see both in the live preview above.

Can I customize it?

Open this theme in the editor to tweak any color, radius, font or shadow, then export your own version.