RGB to CMYK Converter
Enter red, green and blue values to get CMYK percentages for print. Click any result to copy it.
How to convert RGB to CMYK
Scale red, green and blue to 0 to 1. Black (K) is whatever the brightest channel is missing. Cyan, magenta and yellow are what each channel is missing once the black is taken out.
R’ = 0.000, G’ = 0.502, B’ = 0.502
K = 1 − max(R’, G’, B’) = 0.498
C = (1 − 0.000 − 0.498) / (1 − 0.498) = 1.000
M = (1 − 0.502 − 0.498) / (1 − 0.498) = 0.000
Y = (1 − 0.502 − 0.498) / (1 − 0.498) = 0.000
Result: cmyk(100%, 0%, 0%, 50%)
Tip: paste a whole value like rgb(0, 128, 128) into any box and the converter fills all three.
Before you send a file to print
This is the standard device-independent formula, which is what most online converters use. A print shop converts with an ICC profile for its press and paper, so its numbers can differ a few points. Very bright screen colors, like a vivid lime or electric blue, can sit outside what ink can reproduce. For brand colors, ask your printer for a proof.
Common RGB colors in CMYK
Select a color name for its full page, or use Load to put it in the converter.
| Color | Hex | CMYK |
|---|---|---|
| Black | #000000 | 0%, 0%, 0%, 100% |
| White | #FFFFFF | 0%, 0%, 0%, 0% |
| Red | #FF0000 | 0%, 100%, 100%, 0% |
| Lime | #00FF00 | 100%, 0%, 100%, 0% |
| Blue | #0000FF | 100%, 100%, 0%, 0% |
| Yellow | #FFFF00 | 0%, 0%, 100%, 0% |
| Cyan | #00FFFF | 100%, 0%, 0%, 0% |
| Magenta | #FF00FF | 0%, 100%, 0%, 0% |
| Silver | #C0C0C0 | 0%, 0%, 0%, 25% |
| Gray | #808080 | 0%, 0%, 0%, 50% |
| Maroon | #800000 | 0%, 100%, 100%, 50% |
| Olive | #808000 | 0%, 0%, 100%, 50% |
| Green | #008000 | 100%, 0%, 100%, 50% |
| Purple | #800080 | 0%, 100%, 0%, 50% |
| Teal | #008080 | 100%, 0%, 0%, 50% |
| Navy | #000080 | 100%, 100%, 0%, 50% |
| Orange | #FFA500 | 0%, 35%, 100%, 0% |
| Pink | #FFC0CB | 0%, 25%, 20%, 0% |
| Brown | #A52A2A | 0%, 75%, 75%, 35% |
| Gold | #FFD700 | 0%, 16%, 100%, 0% |
RGB to CMYK questions
Why is pure RGB green so hard to print?
rgb(0, 255, 0) converts to 100%, 0%, 100%, 0%, but ink cannot get as bright as a screen. Expect a deeper green on paper.
Where do I convert from hex?
Use the hex to CMYK converter. To turn CMYK back into a web color, try the CMYK to hex converter.