Color Code Converter
Color Code Converter is a free online tool that instantly converts color values between different formats used in web development and design. Convert between HEX (#RRGGBB), RGB (rgb(r,g,b)), RGBA (rgba(r,g,b,a)), HSL (hsl(h,s%,l%)), HSLA, and CSS named colors with a single click. Enter a color in any format and get all other representations instantly. Perfect for developers who need to translate color values between CSS, JavaScript, design tools, and image editors, as well as designers who want to convert color picker outputs to CSS-compatible formats.
What Is
Color Code Converter translates color values between the various formats used in digital design and web development. Different tools and contexts use different color notation, and this converter bridges the gap between them. Supported color formats: - HEX (#RRGGBB or #RRGGBBAA): The most common web color format—a six-digit hexadecimal string representing Red, Green, and Blue channels. Example: #FF6347 (Tomato) - RGB (rgb(255, 99, 71)): Functional notation specifying Red, Green, and Blue values from 0-255. - RGBA (rgba(255, 99, 71, 0.8)): RGB with an Alpha channel for opacity (0.0-1.0). - HSL (hsl(9, 100%, 64%)): Hue (0-360 degrees), Saturation (0-100%), Lightness (0-100%). More intuitive for humans to reason about colors. - HSLA (hsla(9, 100%, 64%, 0.8)): HSL with Alpha channel. - CSS Named Colors: 148 standard names like 'tomato', 'cornflowerblue', 'rebeccapurple'. - HSVA, CMYK (design-focused conversions) Why multiple color formats exist: - HEX is compact and universally supported in HTML/CSS - RGB matches how screens produce color (red + green + blue light) - HSL is intuitive: adjust lightness without changing the core hue - RGBA/HSLA adds transparency control - Design tools (Figma, Sketch) often use different formats than code requires Conversion accuracy: All conversions use precise mathematical formulas from the CSS Color Module Level 4 specification. HSL↔RGB↔HEX conversions are lossless for 8-bit color channels. Alpha channel values are preserved exactly.
How to Use
- Enter your color value in any supported format in the input field. You can type a hex code (#FF6347), RGB value (rgb(255,99,71)), HSL value (hsl(9,100%,64%)), or even a CSS named color (tomato).
- The tool auto-detects the format you entered and displays all other representations in real-time. No need to click a convert button—updates happen instantly as you type.
- View the conversion results in the output panels. Each panel shows the format name, syntax, and formatted value. Click any result to copy it to your clipboard immediately.
- Use the color picker (eyedropper icon) to visually select a color from your screen. The chosen color is immediately converted to all supported formats.
- Check the color preview swatch to confirm the actual color. The preview shows the color against both light and dark backgrounds to help you assess visibility.
- For rgba/hsla conversions, adjust the alpha slider to see how opacity changes affect the output hex code (8-digit format) and other representations.
Examples
Input: HEX: #FF5733
Process: FF=255, 57=87, 33=51
Result: RGB(255, 87, 51) | HSL(11, 100%, 60%)
Input: RGB(0, 128, 255)
Process: 0=00, 128=80, 255=FF | H=210, S=100%, L=50%
Result: HEX: #0080FF | HSL(210, 100%, 50%)
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Frequently Asked Questions
What is the difference between HEX and RGB formats?
HEX (#FF6347) and RGB (rgb(255, 99, 71)) represent the same color but use different notation. HEX combines all three color channels into a single 6-digit hexadecimal number (base-16). RGB expresses each channel separately as a decimal number from 0-255. HEX is more compact and is the default format in most design tools and HTML. RGB/HSL functional notation is more readable and easier to manipulate programmatically in JavaScript (e.g., adjusting lightness in HSL).
Should I use HSL or RGB for my CSS?
HSL is generally preferred for programmatic color manipulation because it's more intuitive. With HSL, you can darken a color by reducing the Lightness percentage, or shift a color by changing the Hue—without affecting other aspects. With RGB, creating a darker shade requires reducing all three channels proportionally, which is harder to reason about. However, HEX remains the most compact for static color values in stylesheets.
Can I convert 8-digit hex colors (with alpha) to other formats?
Yes. 8-digit hex codes (#RRGGBBAA) include the alpha channel. For example, #FF634780 represents Tomato with 50% opacity. The tool converts these to rgba() notation. When converting from rgba() to hex, if alpha is less than 1.0, the output will be in 8-digit hex format. You can also use the alpha slider to adjust transparency in real-time.
How do I convert CMYK to RGB for web use?
CMYK (Cyan, Magenta, Yellow, Key/Black) is used for print design. To convert CMYK to RGB for web/CSS, use the CMYK input fields (values 0-100 for each channel), and the tool outputs the equivalent RGB, HEX, and HSL values. Note: CMYK and RGB have different color gamuts—some print colors have no exact screen equivalent. The conversion provides the closest RGB approximation.
Does the tool support CSS4 color formats like LCH or LAB?
The tool supports the most commonly used formats (HEX, RGB, RGBA, HSL, HSLA, named colors). CSS Color Module Level 4 introduced LCH, LAB, and OKLCH which offer more perceptually uniform color spaces. For most web development needs, HSL provides sufficient perceptual uniformity. If you specifically need LCH/LAB conversion, dedicated color science tools may be more appropriate.