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Color Name Finder

Closest CSS named colors

  • Teal

    #008080 (closest)

  • DarkCyan

    #008B8B

  • SeaGreen

    #2E8B57

  • DarkSlateGray

    #2F4F4F

  • MediumSeaGreen

    #3CB371

Compares your color against the 140 CSS-named colors using Euclidean RGB distance — a fast approximation. For perceptually-correct closest- match (CIE Lab Delta-E), our color-converter has more options.

Find the closest CSS-named colors to any hex value. Drop in a hex code like #6495ED and the tool returns the 5 nearest CSS-140 named colors ranked by Euclidean RGB distance — in this case cornflowerblue (which is exactly #6495ED), steelblue, cadetblue, etc. Useful for cross-referencing custom brand colors to known names, finding a memorable name for a color in your design system, writing CSS that’s readable without color-picker tooling, and educational use (learning what colors like “papayawhip” or “rebeccapurple” actually look like).

CSS supports 140 named colors out of the box, ranging from obvious (red, blue, green) to obscure (papayawhip, mistyrose, blanchedalmond). The list dates back to the original CSS 1 specification (1996) and was inherited from X11’s color names — many of the unusual entries (peachpuff, gainsboro) come from a 1980s decision to map common interior-design / print color names to RGB triples. Most are still rendered identically across all modern browsers.

The matching uses Euclidean distance in RGB space: √((r₁-r₂)² + (g₁-g₂)² + (b₁-b₂)²). Simple, fast, and produces intuitive results for most colors. Note: RGB Euclidean distance doesn’t perfectly match human perception — perceptually-uniform color spaces (Lab, OKLab) handle that better — but for finding “close enough” named colors, RGB distance works fine.

Nasıl Kullanılır

  1. Pick a color from the color picker, or paste a hex code (#6495ED, #ff5733, etc.) directly.
  2. The 5 closest CSS-140 named colors appear, ranked by RGB distance with the exact distance shown.
  3. If the top match has distance 0, your input is exactly that named color (e.g. #6495ED is exactly cornflowerblue).
  4. Click 'Copy name' to grab the named color for use in CSS — readable shorthand without color-picker tooling.
  5. For brand-color planning, run your brand hex through and pick the closest evocative-sounding named match for your design-system docs.

Ne Zaman Kullanılır

  • Documenting brand colors with memorable references ('our blue is closest to cornflowerblue').
  • Writing legacy CSS where hex codes are less readable than names.
  • Educational / curiosity — learning what “papayawhip” or “mintcream” actually look like.
  • Color-picker debugging — comparing a designer's mockup color to the closest standard named color.

Ne Zaman Kullanılmaz

  • Production CSS where exact color matters — use the actual hex; don't substitute named colors that are visually different.
  • Modern design systems with their own color tokens — those are documented as design-system variables (e.g. `--blue-500`), not CSS-named colors.
  • Outside the web — print, paint, fabric, etc. have their own color naming systems (Pantone, Sherwin-Williams, RAL); CSS names don't translate.

Yaygın Kullanım Senaryoları

  • Verifying a number or output before passing it on
  • Quick use during a typical workday
  • Pre-decision sanity-check on inputs and outputs
  • Educational use — demonstrating the underlying concept

Sık Sorulan Sorular

Why use named colors?

Three reasons: (1) readable CSS without color-picker tooling — `color: cornflowerblue` is more memorable than `#6495ED`; (2) works in legacy environments and HTML attributes (e.g. `<font color="red">`) without explicit hex parsing; (3) pedagogical — exposes designers and developers to the semantic vocabulary of color. Modern production CSS usually uses design-system tokens or hex; named colors shine for prototypes, examples, and fallbacks.

Why are some named colors so weirdly named?

Historical accident. The 140 CSS named colors come from X11's rgb.txt (1985-1991), which was compiled from common interior-design / print-trade color names of the 1980s. PapayaWhip, BlanchedAlmond, MistyRose — these were real paint and fabric colors marketing-named back then. They were standardized into HTML/CSS in 1996 and never cleaned up.

What's RebeccaPurple?

Added to CSS in 2014 as a tribute to Rebecca Meyer, the daughter of CSS pioneer Eric Meyer, who passed away from brain cancer at age 6. The W3C added the color (#663399) and her father's chosen tribute name to the CSS spec by unanimous vote — the only color ever added for a personal memorial. A small tradition: many CSS-aware projects use rebeccapurple in their docs as a quiet acknowledgement.

Why doesn't the closest match feel quite right?

Because RGB Euclidean distance approximates perceptual distance imperfectly. A color shift along the green axis is more visible than the same shift along blue, but Euclidean treats them equally. For perceptually-accurate matching use Lab or OKLab distance — those better match how human eyes perceive 'closeness' between colors.

Is there a difference between CSS color names and HTML color names?

No — they're the same 140 names. HTML inherited them from X11; CSS adopted them. The CSS Color Module 4 spec did add a few more (like rebeccapurple), but the core 140 are universal across HTML, CSS, SVG, and most graphics APIs.

Can I use named colors in modern frameworks?

Yes — every modern framework (React, Vue, Svelte, Tailwind, etc.) accepts CSS named colors anywhere a CSS color value is expected. Tailwind even has utility classes for some (e.g. `text-rose-500` is a Tailwind token, not a CSS-name, but `text-[cornflowerblue]` arbitrary value works fine). Browsers parse named colors at the CSS engine level; everything passes through.