How to Find the Name of Any Hex Color

You’ve got a hex code — #4682B4, say — pulled from a design file or a brand guideline, and you want to describe it in a design doc or code comment without just writing the raw hex value. Is that “steel blue”? “Slate blue”? Eyeballing a color wheel or scrolling through a printed color chart to find the closest named match is slow, and human color perception isn’t precise enough to reliably match a hex value to its nearest standard name just by looking.

CSS itself defines 148 standard named colors (steelblue, tomato, rebeccapurple, and so on), and matching an arbitrary hex value to the nearest one is a small, well-defined computation — distance in color space — that’s much faster to do programmatically than by eye.

What color name matching actually involves

Given a hex value, the tool converts it to a numeric color representation and calculates the distance to each of the 148 standard CSS named colors, returning whichever named color is numerically closest. If the hex value is an exact match to a standard name (like #FF6347 being exactly tomato), it flags that directly rather than reporting an approximate nearest match.

This matters for two different needs: knowing the exact CSS name for a color (useful in code, where using the named constant instead of a raw hex value can be clearer), and knowing the closest approximate name for a color that isn’t one of the 148 exact standards (useful in design conversation and documentation, where “a steel-blue-ish tone” communicates faster than a hex code).

Why people get stuck here

• 148 names is too many to memorize. Nobody has the full CSS named-color list memorized well enough to eyeball a match confidently.
• Perceived color vs. numeric color differ. Two similar-looking blues can be numerically farther apart than expected, and vice versa, making eyeballed guesses unreliable.
• Design docs need words, not just hex codes. Describing a palette in a written spec often reads better with a color name (“a warm coral accent”) than a raw hex value.
• Exact matches matter differently than approximate ones. Knowing a hex code is exactly cornflowerblue is a different, more useful fact than knowing it’s merely close to it.

What a good color name finder looks like

Covers the full standard CSS color set

All 148 named colors as the reference set, since that’s the standard most design and development contexts actually use.

Clear exact-match detection

It should distinguish an exact match from an approximate nearest match — those are different pieces of information with different implications for how you use the name.

Instant, no manual chart-scrolling

Type or paste a hex value and get the answer immediately, rather than scrolling a printed or on-screen color reference chart.

Common mistakes to avoid

• Assuming a “closest named color” result is an exact match when it’s actually an approximation — check whether the tool flags it as exact.
• Relying on visual memory to identify a color name instead of checking numerically, especially for similar shades (navy vs. midnightblue, for example).
• Using a non-standard or brand-specific color name in code where a real CSS named constant would be clearer and more portable.
• Forgetting that named CSS colors are a fixed set of 148 — most real-world colors won’t have an exact match, only a nearest one.

How to do it with Color Name Finder

Online Tool Store’s Color Name Finder finds the closest of the 148 standard CSS color names for any hex value, with exact-match detection, entirely in your browser.

1. Open the Color Name Finder tool.
2. Enter or paste your hex color code.
3. Check whether it’s flagged as an exact CSS name match or a nearest approximation.
4. Use the returned name in your design doc, code comment, or conversation.

Frequently asked questions

How many standard color names does CSS define?

148 named colors are part of the CSS color specification, ranging from common ones like red and blue to more specific ones like mediumseagreen and rebeccapurple.

What if my hex code isn’t an exact match to any named color?

The tool returns the nearest named color by calculated color distance, clearly distinguished from an exact match — most real-world hex values won’t be an exact match, since 148 names can’t cover the full range of possible colors.

Can I use CSS color names instead of hex codes in my code?

Yes, for the 148 standard names, browsers recognize them directly (color: steelblue; works the same as the equivalent hex value) — which can make code more readable when the named color is an exact or very close match to what you need.

Final thought

When you need to describe a color in words rather than a hex code, check the nearest standard name numerically instead of guessing — it’s faster and more reliable than eyeballing a color chart.

Try the free Color Name Finder tool