Color Name Finder

Enter a color, find its closest named match.

A free online color name finder — type a hex or RGB value and get the nearest standard CSS color name, ranked by similarity. No signup, runs entirely in your browser.

Hex or RGB

What does a color name finder do?

A color name finder takes any hex or RGB value and matches it to the closest of the standard named colors — since most hex values don't correspond exactly to a named color, it ranks every name by visual distance and returns the nearest ones, so you get a human-readable label for any color instead of just a code.

The standard CSS named colors

CSS defines a set of standard color names — from common ones like red and navy to more specific ones like cornflowerblue and rebeccapurple. Every browser recognizes these names directly in CSS (color: tomato; works exactly like a hex code). This tool searches the full list for the nearest match to whatever value you enter.

How "closest" is measured

The tool uses the "redmean" color distance formula — a weighted variant of Euclidean distance in RGB space that adjusts each channel's weight based on the overall redness of the two colors being compared. It's a well-established, low-cost approximation of human color perception, noticeably more accurate than plain unweighted RGB distance while still being fast to compute.

Common uses

Naming a brand or design system color for documentation, describing a color to someone over chat without sharing a hex code, quickly identifying what a picked-up color from an image roughly corresponds to, or just satisfying curiosity about what a given hex value is "called."

Frequently asked questions

Enter a hex code (like #3b82f6) or RGB value, or pick a color with the swatch picker. The closest standard CSS color name appears immediately, along with the next 4 closest matches ranked by how visually similar they are.

The standard CSS named colors ("tomato", "cornflowerblue", "rebeccapurple", and so on) — the same names browsers recognize directly in CSS. Since a hex value that doesn't exactly match a named color is common, the tool finds the nearest one instead of requiring an exact match.

Using the "redmean" color distance formula — a weighted variant of Euclidean distance in RGB space that accounts for how human vision is more sensitive to some color channels than others, giving noticeably better matches than plain RGB distance.

No. The color list ships with the page and the matching happens locally in your browser with JavaScript — nothing is ever sent anywhere.