RGB to CMYK Color Converter
Instantly convert Red, Green, Blue (RGB) to Cyan, Magenta, Yellow, Key (Black) (CMYK) color codes. Enter any RGB value and get the CMYK equivalent in real time — no signup required.
Color Preview
#6366F1
All formats
#6366F1
hsl(239, 84%, 67%)
cmyk(59%, 58%, 0%, 5%)
RGB vs CMYK — What's the Difference?
RGB
Red, Green, Blue
Three integer values (0–255) for red, green, and blue light. The native color model for screens, monitors, and digital displays.
Example: color: rgb(99, 102, 241)
CMYK
Cyan, Magenta, Yellow, Key (Black)
Four percentages for Cyan, Magenta, Yellow, and Black ink. The standard color model for print design and professional publishing.
Example: Not natively supported in CSS (convert to HEX first)
How to Convert RGB to CMYK
All conversion math runs in your browser using the sRGB color space. No data is sent to a server.
Common Colors — RGB to CMYK Reference Table
| Color | RGB | CMYK |
|---|---|---|
| Red | rgb(255, 0, 0) | cmyk(0%, 100%, 100%, 0%) |
| Green | rgb(0, 128, 0) | cmyk(100%, 0%, 100%, 50%) |
| Blue | rgb(0, 0, 255) | cmyk(100%, 100%, 0%, 0%) |
| White | rgb(255, 255, 255) | cmyk(0%, 0%, 0%, 0%) |
| Black | rgb(0, 0, 0) | cmyk(0%, 0%, 0%, 100%) |
| Orange | rgb(255, 165, 0) | cmyk(0%, 35%, 100%, 0%) |
| Purple | rgb(128, 0, 128) | cmyk(0%, 100%, 0%, 50%) |
| Yellow | rgb(255, 255, 0) | cmyk(0%, 0%, 100%, 0%) |
| Cyan | rgb(0, 255, 255) | cmyk(100%, 0%, 0%, 0%) |
| Magenta | rgb(255, 0, 255) | cmyk(0%, 100%, 0%, 0%) |
| Gray | rgb(128, 128, 128) | cmyk(0%, 0%, 0%, 50%) |
| Pink | rgb(255, 192, 203) | cmyk(0%, 25%, 20%, 0%) |
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Frequently Asked Questions
How do I convert RGB to CMYK?
To convert RGB to CMYK: K = 1 − max(R,G,B) / 255 | C = (1 − R/255 − K) / (1 − K) | M = (1 − G/255 − K) / (1 − K) | Y = (1 − B/255 − K) / (1 − K). Use the converter above to do this instantly for any color value.
What is the RGB color format?
Red, Green, Blue (RGB) — Three integer values (0–255) for red, green, and blue light. The native color model for screens, monitors, and digital displays.
What is the CMYK color format?
Cyan, Magenta, Yellow, Key (Black) (CMYK) — Four percentages for Cyan, Magenta, Yellow, and Black ink. The standard color model for print design and professional publishing.
Is this RGB to CMYK converter free?
Yes. It is completely free, works in your browser with no signup or upload. All color math runs locally.
Can I convert CMYK back to RGB?
Yes — use the swap button in the converter above, or visit the CMYK to RGB converter page directly.