How to use the CMYK to RGB Converter
Enter cyan, magenta, yellow and black from 0 to 100. You get the RGB values and a hex code.
How CMYK to RGB conversion works
Each value is turned into a fraction, then R = 255 × (1 − C) × (1 − K), G = 255 × (1 − M) × (1 − K) and B = 255 × (1 − Y) × (1 − K). With no black, 100% magenta and 100% yellow give rgb(255, 0, 0), pure red.
Limits of the simple formula
This conversion does not use an ICC colour profile, so it shows the mathematical equivalent rather than how a particular press prints. Treat the result as a close screen preview.
The formula
R = 255 × (1 − C) × (1 − K), and likewise for G and B.
Examples
- cmyk(76%, 47%, 0%, 4%)
rgb(59, 130, 245) Hex: #3B82F5
- cmyk(0%, 100%, 100%, 0%)
rgb(255, 0, 0) Hex: #FF0000
CMYK to RGB table
| CMYK | RGB |
|---|---|
| cmyk(0%, 0%, 0%, 0%) | rgb(255, 255, 255) |
| cmyk(0%, 0%, 0%, 100%) | rgb(0, 0, 0) |
| cmyk(100%, 0%, 0%, 0%) | rgb(0, 255, 255) |
| cmyk(0%, 100%, 0%, 0%) | rgb(255, 0, 255) |
| cmyk(0%, 0%, 100%, 0%) | rgb(255, 255, 0) |
| cmyk(0%, 100%, 100%, 0%) | rgb(255, 0, 0) |
| cmyk(100%, 0%, 100%, 0%) | rgb(0, 255, 0) |
| cmyk(100%, 100%, 0%, 0%) | rgb(0, 0, 255) |
| cmyk(0%, 0%, 0%, 50%) | rgb(128, 128, 128) |
| cmyk(0%, 35%, 100%, 0%) | rgb(255, 166, 0) |
Limitations and assumptions
Simple mathematical conversion. Printers use colour profiles, so printed results can differ.
Frequently asked questions
What is cmyk(0%, 0%, 0%, 0%) in RGB?
rgb(255, 255, 255), white: no ink on the page.
Will the screen colour match the print?
Closely but not exactly. Paper, ink and press settings change how a CMYK colour looks, which a profile-free formula cannot know.
How do I convert RGB to CMYK?
Use the RGB to CMYK converter.