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CMYK to OKLCH converter

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

Read as CMYK

OKLCH valueoklch(68.003% 0.21026 33.616)
OKLCH to CMYK

Every other format

CMYK to OKLCH examples

ColorCMYKOKLCH
cmyk(0% 100% 100% 0%)oklch(62.796% 0.25768 29.234)
cmyk(100% 0% 100% 0%)oklch(86.644% 0.29483 142.495)
cmyk(100% 100% 0% 0%)oklch(45.201% 0.31321 264.052)
cmyk(0% 0% 0% 0%)oklch(100% 0 0)
cmyk(0% 0% 0% 100%)oklch(0% 0 0)
cmyk(0% 0% 0% 50%)oklch(59.987% 0 0)
cmyk(0% 66% 80% 0%)oklch(68.036% 0.21001 33.692)
cmyk(76% 47% 0% 4%)oklch(62.308% 0.18801 259.815)
cmyk(91% 0% 30% 27%)oklch(69.587% 0.14907 162.48)
cmyk(0% 36% 96% 4%)oklch(76.859% 0.16466 70.08)
cmyk(43% 63% 0% 4%)oklch(60.563% 0.21892 292.717)
cmyk(0% 69% 35% 7%)oklch(65.592% 0.21177 354.308)

About CMYK and OKLCH

CMYK is cyan, magenta, yellow and key (black) ink in percent. The conversion here is the simple device-independent formula, so for print always check with your printer profile.

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 CMYK 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 CMYK to OKLCH?

Paste or type a CMYK 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 CMYK 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.