HEX to Named Color Converter
Enter any HEX color code and instantly find the closest CSS named color from all 148 CSS named colors. See the similarity percentage, Euclidean distance score, and full RGB/HSL values. Completely private - all processing happens locally in your browser. Free, no signup required.
Sample Colors
Formats: #RRGGBB #RGB (with or without the # prefix)
Top 6 Closest CSS Named Colors
from all 148 CSS named colorsSalmon
salmon · RedLight Coral
lightcoral · RedCoral
coral · OrangeTomato
tomato · RedDark Salmon
darksalmon · RedPale Violet Red
palevioletred · PinkWhy Use Our HEX to Named Color Converter?
Instant HEX to Named Color Matching
The HEX to Named Color converter calculates the Euclidean distance between your input and all 148 CSS named colors instantly. Results update on every keystroke - showing the closest match with similarity percentage, distance score, and colour values. No button to press.
Similarity Percentage & Distance Score
Each result shows both the similarity percentage (0-100%) and the Euclidean distance (Δ) in RGB space. A 100% similarity means an exact match. The colour-coded progress bar gives you a quick visual sense of how close the match is.
100% Private Browser Processing
All colour matching happens locally in your browser using JavaScript. Your HEX values never leave your device and are never sent to any server - completely safe for proprietary design work and client projects.
Free & No Signup Required
Use the HEX to Named Color converter unlimited times with no signup, no subscription, and no usage caps. The tool is completely free forever with no ads blocking the interface.
Common Use Cases for HEX to Named Color Converter
CSS Development with Named Colors
Replace hard-to-remember HEX codes with semantic CSS named colors. The HEX to Named Color converter tells you exactly which CSS color name matches your design token, making your stylesheets more readable and maintainable.
Design System Documentation
When documenting a design system, use the HEX to Named Color converter to give each colour a human-readable CSS name. Named colours are easier to communicate across teams and can be used directly in CSS declarations.
Digital Art & Illustration
Artists and illustrators use the HEX to Named Color converter to find the standard CSS name for colours picked from reference images. This helps maintain colour consistency across different tools and platforms.
Accessibility & Colour Communication
Accessibility specialists use named colors to describe UI elements clearly in reports and documentation. The HEX to Named Color converter gives you the standard CSS name for any colour, making communication with stakeholders more precise.
Educational & Learning CSS
CSS learners use the HEX to Named Color converter to understand what real-world colours the named CSS values represent. Enter any HEX code and see which named color it matches - a practical way to learn the CSS named color palette.
Technical Writing & Tutorials
Technical writers use the HEX to Named Color converter to find the correct CSS color name when writing documentation. Using named colours in tutorials makes code examples clearer and easier to understand for readers.
Understanding HEX to Named Color Conversion
What Is HEX to Named Color Conversion?
HEX to named color conversion takes a hexadecimal colour code (like #FF6B6B) and finds the closest CSS named color from the 148 colours defined in the CSS Color Module Level 4 specification. Instead of just showing the hex value, you get a human-readable name like “Coral” or “Tomato” along with a similarity percentage that tells you how close the match is. The tool computes the Euclidean distance between your input colour and every named color in RGB space, ranks them from closest to farthest, and displays the top 6 matches with their similarity scores.
How Our HEX to Named Color Converter Works
- Enter your HEX colour: Type or paste a HEX value (e.g.
#FF6B6Bor#F6B). You can also use the native colour picker swatch or click any sample colour. All processing runs locally in your browser - your colour data never leaves your device. - Distance calculation: The tool converts both your input and each of the 148 CSS named colors to RGB values and computes the Euclidean distance using the formula √((R₁−R₂)² + (G₁−G₂)² + (B₁−B₂)²). The maximum possible distance in RGB space is approximately 441.67, which is used to calculate the similarity percentage: (1 − distance / 441.67) × 100.
- Results displayed instantly: The closest match is shown first with a prominent similarity badge and colour comparison strip. Each result card shows the distance (Δ), similarity percentage with a colour-coded progress bar, and the HEX, RGB, and HSL values - all copyable with one click.
Understanding the Similarity Score
- 100% similarity (Δ = 0):Your HEX colour exactly matches one of the 148 CSS named colors. The card shows an “Exact Match” badge with a highlighted border.
- 95-99% similarity (Δ = 1-22): Nearly indistinguishable from the named colour. These matches are visually identical in most contexts and are safe to use interchangeably.
- 80-94% similarity (Δ = 23-88): Close match with minor perceptible difference. The colour maintains the same hue family but may differ slightly in lightness or saturation.
- Below 80% similarity (Δ > 88): Noticeable colour difference. The named color shares similar hue characteristics but has significant variation in brightness or saturation from your input.
CSS Named Colors vs Other Color Systems
CSS named colors are the 148 colour keywords defined in the CSS specification that can be used directly in stylesheets (e.g., color: CornflowerBlue). These include the original 16 HTML colours plus 132 additional colours from CSS2.1 and CSS Color Module Level 4. They represent the only colour names that work natively in CSS without any pre-processing or conversion.
Unlike other colour naming systems like X11 (used in Unix/Linux systems) or Pantone (used in print), CSS named colors are guaranteed to render consistently across all modern browsers. This makes them the safest choice for web development. The HEX to Named Color converter focuses exclusively on these 148 CSS keywords, ensuring that every match shown can be used directly in your CSS code.
Related Color Tools
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Enter any HEX, RGB, or search query to find the closest named color from 300+ CSS, X11, and Pantone color names across three databases.
CSS Named Colors Reference
Browse, search, and copy all 148 CSS named colors with HEX, RGB, and HSL values. Filter by 12 colour families including red, blue, green, and more.
HEX to RGB Converter
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Frequently Asked Questions About HEX to Named Color Converter
A HEX to Named Color converter takes any hexadecimal color code (like #FF6B6B) and finds the closest CSS named color from the 148 colors defined in the CSS specification. Instead of just showing the hex value, you get a human-readable name like "Coral" or "Tomato" with a similarity percentage that tells you how close the match is.
The similarity percentage is calculated from the Euclidean distance in RGB color space. The tool computes the distance between your input color and each of the 148 CSS named colors using the formula √((R₁−R₂)² + (G₁−G₂)² + (B₁−B₂)²). The maximum possible distance (about 441.67) represents 0% similarity, and a distance of 0 represents 100% similarity.
The Δ (delta) is the raw Euclidean distance in RGB color space. A distance of 0 means an exact match. Distances below 22 (95%+ similarity) are nearly indistinguishable. Distances between 22 and 88 (80-94% similarity) are close matches with minor perceptible differences. Distances above 88 (below 80% similarity) indicate a noticeable color difference.
Yes. All color matching happens 100% client-side in your browser using JavaScript. Your HEX values are never sent to any server, never stored, and never transmitted anywhere. The converter is completely private and processes everything locally on your device, making it safe for proprietary design work and client projects.
CSS named colors are the 148 color keywords defined in the CSS Color Module Level 4 specification that can be used directly in CSS stylesheets - like "CornflowerBlue", "Tomato", "RebeccaPurple", and "DodgerBlue". These include the original 16 HTML colors plus additional colors from CSS2.1 and CSS4. They are the only color names that work natively in all modern browsers without any conversion.
Yes! Unlike other color naming systems (like X11 or Pantone), CSS named colors can be used directly in any CSS declaration. For example, if the tool tells you that #FF6B6B matches "Coral", you can write color: Coral or background-color: Coral in your stylesheet and it will render correctly in all modern browsers.
Yes. The tool is 100% free with no signup required, no premium features, and no usage limits. Convert unlimited colors without any restrictions or hidden costs. There are no ads blocking the interface.
The CSS named color palette contains only 148 colors, which is a small fraction of the 16.7 million colors available in the sRGB color space. Most hex codes do not have an exact named equivalent. The tool finds the closest match by calculating the Euclidean distance in RGB space, so you always get the best possible approximation with a clear indication of how close it is.