About this tool
Convert between CMYK print values and RGB/HEX web colors instantly, with a live preview swatch, all in your browser.
Frequently asked questions
How is CMYK converted to RGB?
Each RGB channel is computed as 255 × (1 − ink) × (1 − K) using the standard CMYK-to-RGB formula, then mapped to a hex value.
Why might a print color look different on screen?
CMYK is a subtractive model for ink while RGB is additive light, so this is a mathematical conversion and exact print matching needs a calibrated profile.