RGB to HSL
A direct geometric transform, so it is lossless and reversible.
hsl(216.9 89.9% 61%)Paste a RGB value — other formats work too.
Need every format at once? Open in the full picker
Worked examples
Common colours converted from RGB to HSL, computed with the same engine the picker uses.
| Colour | RGB | HSL | Copy |
|---|---|---|---|
| Pure red | rgb(255 0 0) | hsl(0 100% 50%) | |
| Pure green | rgb(0 255 0) | hsl(120 100% 50%) | |
| Pure blue | rgb(0 0 255) | hsl(240 100% 50%) | |
| White | rgb(255 255 255) | hsl(300 100% 100%) | |
| Mid grey | rgb(128 128 128) | hsl(300 0% 50.2%) | |
| Black | rgb(0 0 0) | hsl(0 0% 0%) | |
| Interface blue | rgb(66 135 245) | hsl(216.9 89.9% 61%) | |
| Success green | rgb(34 197 94) | hsl(142.1 70.6% 45.3%) | |
| Danger red | rgb(239 68 68) | hsl(0 84.2% 60.2%) | |
| Warning amber | rgb(245 158 11) | hsl(37.7 92.1% 50.2%) | |
| Editor black | rgb(30 30 30) | hsl(0 0% 11.8%) | |
| Warm sand | rgb(233 196 106) | hsl(42.5 74.3% 66.5%) |
How the conversion works
A direct geometric transform, so it is lossless and reversible.
Both formats are computed from a single canonical representation — CIE XYZ with a D65 white point, held in floating point — rather than by chaining one format into the next. That matters because chained conversions accumulate rounding error, and because it means a colour that cannot be represented in the target format is handled deliberately rather than by accident.
When the source describes a colour outside the target's gamut, chroma is reduced in OKLCh while lightness and hue are held, following the CSS Color 4 gamut mapping algorithm. Clipping each channel independently would be simpler but visibly shifts hue on saturated colours.