Color palette generator
Generate beautiful color palettes with the space bar. Lock colors, pick schemes and moods, check contrast, and export to CSS, Tailwind, ASE, or PNG.
RGB to CMYK converter
Convert RGB or HEX to CMYK for print, or CMYK to RGB and HEX. Sliders, formulas, and bulk conversion included.
CMYK
How to use RGB to CMYK converter
Convert RGB or HEX to CMYK for print, or switch direction to turn CMYK into RGB and HEX for screens. Enter any color or drag the cyan, magenta, yellow and black sliders.
The formula
K = 1 − max(R, G, B) / 255, then C = (1 − R′ − K) / (1 − K), and likewise for M and Y. This is the standard device-independent conversion used by most design tools' quick conversions.
Note for print: real printed color depends on the press, paper and ICC profile (for example FOGRA39 or GRACoL). Use these values as a starting point and check a proof for brand-critical work.
- Bulk convert lists of colors to CMYK
- CMYK as percentages and 0–1 values, plus every other format
RGB to CMYK converter FAQs
Is RGB to CMYK converter free?
RGB to CMYK converter is a free online tool on ReallyUseful.Tools. No account is required.
Does RGB to CMYK converter run in my browser?
RGB to CMYK converter is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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