Color Converter
Free color converter. Paste a colour as HEX, RGB or HSL and instantly get all three formats — perfect for CSS, design handoffs and brand palettes.
About the Color Converter
A fast color converter that translates any color between HEX, RGB, and HSL formats instantly, helping you bridge the gap between design tools and CSS.
Paste a colour in any of the three formats and this converter returns all three, exactly equivalent. The same colour wears three outfits in web work: HEX (#4f46e5) in design tools and brand guides, RGB (rgb(79, 70, 229)) in JavaScript and image editors, HSL (hsl(243, 75%, 59%)) in modern CSS where its human-readable hue/saturation/lightness makes palette adjustments sane. Handoffs constantly require translating between them — the designer sends HEX, the CSS uses HSL, the canvas API wants RGB numbers.
It accepts the common variants people actually paste: 3-digit shorthand hex (#abc expands to #aabbcc), hex with or without the #, and rgb()/hsl() with or without an alpha slot. Unparseable input gets a clear error showing the accepted formats rather than a silently wrong colour.
A word for HSL, the underused one: because it separates what the colour is (hue, 0–360°) from how vivid (saturation) and how bright (lightness) it is, palette work becomes arithmetic. A hover state is the same HSL with lightness dropped 10 points; a muted background is the brand hue with saturation cut to 20% and lightness raised to 95%; a complementary accent is hue + 180. Try converting your brand colour here and reading its HSL — many developers find they finally understand their own palette. Everything runs locally in your browser.
How to use the Color Converter
- Paste or type your color in the input box. It can be HEX, RGB, or HSL format.
- The tool automatically detects the format.
- Click Convert to view the equivalents in all three formats.
- Copy the format you need for your CSS or design tool.
Worked example
Enter '#4f46e5' and the converter will instantly return rgb(79, 70, 229) and hsl(243, 75%, 59%).
Frequently asked questions
- Which format should I use in CSS?
- All three work everywhere. HEX is compact and conventional; HSL is easiest to modify programmatically (lightness for hover states, saturation for muted variants). Pick one per project and stay consistent.
- What about alpha (transparency)?
- This converter works with the opaque colour. For transparency, append the alpha in your CSS — rgba(79, 70, 229, 0.5), hsl with / 50%, or 8-digit hex — the underlying colour conversion is the same.
- Why does my HSL round-trip to a slightly different HEX?
- HSL values are conventionally rounded to whole degrees and percentages, which can shift the RGB result by a point or two — imperceptible in practice.
- Do I need to include the '#' for hex codes?
- No, the converter will understand standard 3-digit or 6-digit hex codes even if you omit the '#'.
- Is this tool safe for branded colors?
- Yes, the conversion happens entirely on your local machine, so your brand color values aren't tracked or stored anywhere.
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