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CMYK to HWB converter

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

Read as CMYK

HWB valuehwb(10.5 20% 0%)
HWB to CMYK

Every other format

CMYK to HWB examples

ColorCMYKHWB
cmyk(0% 100% 100% 0%)hwb(0 0% 0%)
cmyk(100% 0% 100% 0%)hwb(120 0% 0%)
cmyk(100% 100% 0% 0%)hwb(240 0% 0%)
cmyk(0% 0% 0% 0%)hwb(0 100% 0%)
cmyk(0% 0% 0% 100%)hwb(0 0% 100%)
cmyk(0% 0% 0% 50%)hwb(0 50.2% 49.8%)
cmyk(0% 66% 80% 0%)hwb(10.59 20% 0%)
cmyk(76% 47% 0% 4%)hwb(217.22 23.14% 3.53%)
cmyk(91% 0% 30% 27%)hwb(160.12 6.27% 27.45%)
cmyk(0% 36% 96% 4%)hwb(37.69 4.31% 3.92%)
cmyk(43% 63% 0% 4%)hwb(258.31 36.08% 3.53%)
cmyk(0% 69% 35% 7%)hwb(330.37 28.24% 7.45%)

About CMYK and HWB

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.

HWB describes a color by its hue plus how much white and black are mixed in. It is part of CSS Color 4 and is handy for tints and shades.

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 HWB. 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 HWB?

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 HWB value.

Is the CMYK to HWB 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.