Color Name Finder

CSS defines 147 named colors, ranging from common names like red, blue, and green to more distinctive names like cornflowerblue, mediumaquamarine, and papayawhip. These names originated primarily from the X11 color system used in early Unix graphical environments and were incorporated into the CSS specification for compatibility. The names are not always intuitive — notably, darkgray in CSS is actually lighter than gray. Extended color name databases used by tools like this one go beyond the CSS set to include thousands of names from paint, fashion, and design industries.

Color name matching works by calculating the perceptual distance between your input color and each candidate named color using the CIELAB color space and the ΔE (delta E) distance metric. In CIELAB, Euclidean distances between color points correspond more closely to how different those colors actually appear to the human eye than equivalent calculations performed in RGB space. A ΔE value below 1 is generally imperceptible to most people; differences above 10 appear clearly distinct. The tool returns the named color with the lowest ΔE as the best match.

CSS named colors are fully supported in all modern browsers and are valid for production use. They can improve readability in simple stylesheets or quick prototypes. However, for design systems and professional projects, explicit HEX or HSL values are generally preferred because they are more precise, predictable, and not subject to interpretation. Names like slategray or lightcoral carry no semantic relationship to design intent, and their exact values may not align with the specific tone your design requires.

Yes — the tool supports reverse lookup. Enter a color name (such as “teal”, “salmon”, “lavender”, or “goldenrod”) and the tool returns the corresponding HEX and RGB values along with a visual swatch. This is useful when a designer or client refers to a color by name and you need the precise code for CSS or design software. Extended databases include common paint brand naming conventions and natural language color terms well beyond the standard 147 CSS names.