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CSS Color Name Finder

Find the closest CSS named color for any hex value and browse all 148 CSS color names.

Closest Named Color

Your Color
RoyalBlue

RoyalBlue

#4169E1rgb(65, 105, 225)

Distance: 33.2

Top 10 Closest Colors

1
RoyalBlue#4169E133.2
2
DodgerBlue#1E90FF33.4
3
CornflowerBlue#6495ED46.1
4
SteelBlue#4682B466.9
5
MediumSlateBlue#7B68EE69.5
6
SlateBlue#6A5ACD74.1
7
DeepSkyBlue#00BFFF85.3
8
MediumTurquoise#48D1CC90.4
9
MediumPurple#9370DB93.8
10
LightSeaGreen#20B2AA93.9

All 148 Named CSS Colors

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Frequently Asked Questions

How many named CSS colors are there?
There are 148 named CSS colors recognized by all modern browsers. These range from basic colors like "red" and "blue" to more specific ones like "cornflowerblue", "papayawhip", and "rebeccapurple". Each name maps to a specific hex value that browsers interpret consistently.
How is the closest color name determined?
The tool calculates the Euclidean distance in RGB color space between your input color and all 148 named CSS colors. The named color with the smallest distance (most similar appearance) is returned as the closest match. The distance value indicates how similar the colors are, with 0 meaning an exact match.
What is Euclidean distance in color matching?
Euclidean distance treats the red, green, and blue values as coordinates in 3D space and calculates the straight-line distance between two color points. While not perceptually perfect (human eyes perceive color differences non-uniformly), it provides a good approximation for finding similar colors.
Can I browse all 148 named CSS colors?
Yes, the tool includes a complete browsable list of all 148 named CSS colors. You can see each color with its name, hex value, and RGB values. Click any color to select it and see its details. You can also search by name to quickly find specific colors.
Why should I use named CSS colors?
Named CSS colors improve code readability. Using "cornflowerblue" instead of "#6495ED" makes your CSS more understandable and maintainable. They are also easier to remember and type. However, for precise brand colors, hex or RGB values give you exact control over the color output.
What is the story behind "rebeccapurple"?
Rebeccapurple (#663399) was added to the CSS Color specification in 2014 in memory of Rebecca Meyer, the daughter of CSS pioneer Eric Meyer, who passed away from brain cancer at age 6. It is the newest addition to the named CSS colors list and holds special significance in the web development community.

How to Use the Color Name Finder

Have you ever wondered what the closest named CSS color is for a particular shade? Our Color Name Finder tool instantly matches any hex color to its nearest named CSS color from the official 148 standard colors. This is useful for improving CSS readability, finding approximate color names for design communication, and exploring the full spectrum of named web colors.

Step 1: Enter your color. Type a hex color code (with or without the # prefix) or use the color picker to select any color. The tool accepts both 3-digit and 6-digit hex codes, converting them instantly for matching.

Step 2: See the closest match. The tool immediately displays the closest named CSS color, showing a side-by-side comparison of your input color and the matched named color. The distance score indicates how close the match is, with lower numbers meaning a more accurate match and zero indicating an exact match.

Step 3: Browse and explore. Scroll through the complete list of all 148 named CSS colors, organized for easy browsing. Search by name to find specific colors, or click any color to see its details and how it compares to your current input color.

The History of CSS Named Colors

The original 16 CSS color names (black, white, red, green, blue, yellow, cyan, magenta, and eight others) were inherited from the HTML 3.2 specification in 1997. These colors correspond to the original 16 VGA colors that were standard on early personal computers. The CSS 2.1 specification added "orange" as the 17th named color.

The CSS 3 specification dramatically expanded the named color palette to 147 colors by incorporating the X11 color names, which originated from the X Window System used on Unix workstations. These names were chosen decades ago and include creative descriptors like "moccasin," "peachpuff," "lemonchiffon," and "papayawhip." The 148th color, "rebeccapurple," was added in 2014 as a tribute to Rebecca Meyer.

While the naming conventions may seem arbitrary, these colors have become a fundamental part of web development. They provide a human-readable way to specify colors and are supported by every modern browser. Many developers memorize their favorites for quick prototyping and development.

When to Use Named Colors vs. Hex Values

Use named colors for prototyping. When quickly building layouts or prototypes, named colors like "tomato," "dodgerblue," or "gold" are faster to type and easier to remember than hex values. They make your CSS more readable during the development phase.

Use hex values for precision. For brand colors, design systems, and production code, hex values provide exact color specification. Named colors are limited to 148 options, while hex codes offer over 16 million color possibilities. Your design team's specified colors will almost certainly require hex values.

Use named colors in documentation. When documenting color schemes or communicating with non-technical stakeholders, color names are more intuitive than hex codes. Saying "the background is cornflowerblue" is more meaningful than "the background is #6495ED" for most people.

Consider CSS custom properties. The best practice for production is to define colors as CSS custom properties (variables) with hex values and give them semantic names. This provides both precision and readability: --color-primary: #6495ED gives you the exact color with a meaningful name.

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