HSL to HEX converter
Enter hue, saturation and lightness and get a HEX code ready for CSS, design apps and brand guides.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter hue (h), saturation (s) and lightness (l).
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
With S and L as fractions: C = (1 - |2L - 1|) × S, X = C × (1 - |(H / 60) mod 2 - 1|), m = L - C / 2; then (R1, G1, B1) is (C, X, 0), (X, C, 0), (0, C, X), (0, X, C), (X, 0, C) or (C, 0, X) by the 60 degree sector of H, and each channel is (value + m) × 255. Then: Each channel is rounded to a whole number and written as two base-16 digits: #RRGGBB.
Example
Inputs: Hue (H) = 200 °, Saturation (S) = 50 %, Lightness (L) = 40 %. Result: HEX code: #337799.
Limits and caveats
- RGB channels are rounded to whole numbers, so nearby inputs can give the same result.
- All values are treated as sRGB, the default web color space, not Display P3 or Adobe RGB.
Questions about this tool
Why can nearby HSL values give the same HEX code?
HEX rounds each channel to a whole number from 0 to 255, so very small HSL differences can vanish after rounding.
What does 50% lightness mean in HSL?
At 50% the color is at its most vivid for its saturation; moving toward 0% blends it into black and toward 100% into white.
Is the HEX code upper or lower case?
It is shown in upper case, like #1E90FF. Browsers treat both cases as the same color.