Skip to the color picker
PickShade

RGB to OKLCH converter

Paste a RGB value, get OKLCH instantly. Any other format works too.

Read as RGB

OKLCH valueoklch(68.036% 0.21001 33.692)
OKLCH to RGB

Every other format

RGB to OKLCH examples

ColorRGBOKLCH
rgb(255 0 0)oklch(62.796% 0.25768 29.234)
rgb(0 255 0)oklch(86.644% 0.29483 142.495)
rgb(0 0 255)oklch(45.201% 0.31321 264.052)
rgb(255 255 255)oklch(100% 0 0)
rgb(0 0 0)oklch(0% 0 0)
rgb(128 128 128)oklch(59.987% 0 0)
rgb(255 87 51)oklch(68.036% 0.21001 33.692)
rgb(59 130 246)oklch(62.308% 0.18801 259.815)
rgb(16 185 129)oklch(69.587% 0.14907 162.48)
rgb(245 158 11)oklch(76.859% 0.16466 70.08)
rgb(139 92 246)oklch(60.563% 0.21892 292.717)
rgb(236 72 153)oklch(65.592% 0.21177 354.308)

About RGB and OKLCH

RGB sets red, green and blue from 0 to 255. It describes how a screen mixes light and is written as rgb(255 87 51) in modern CSS.

OKLCH is OKLab in polar form: lightness, chroma and hue. Tailwind CSS v4 uses it for its whole palette because changing lightness keeps the hue stable.

How the conversion works

We read the RGB value, convert it to CIE XYZ with the matrices from the CSS Color 4 specification and then into OKLCH. Values outside the target gamut are mapped by the CSS Color 4 algorithm, which keeps lightness and hue and reduces chroma.

Questions and answers

How do I convert RGB to OKLCH?

Paste or type a RGB value into the field above. PickShade converts it with the CSS Color 4 formulas as you type, and one click copies the OKLCH value.

Is the RGB to OKLCH conversion exact?

The math is exact and the result is rounded only for display, with enough digits to convert back to the same color. If the color does not fit the target gamut, PickShade warns you and shows the nearest color that fits.

Can I get other formats at the same time?

Yes. Every other format, including OKLCH, Display P3, Tailwind, SwiftUI, Flutter and Android, is listed below the result and copies with one click.

Is this converter free?

Yes. It is free, needs no sign-up and runs entirely in your browser.