justyourpaletteRGB to CMYK
Convert screen colors to cyan, magenta, yellow and black.
- 100% Free
- No Sign Up
- Works in Your Browser
RGB to CMYK
Convert RGB screen colors to CMYK percentages
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Every everyday color tool, right in your browser.
No software. No uploads. No signup.
Browse all 28 tools- Color tools
- 28
- Named colors
- 139
- Curated palettes
- 216
How to use the rGB to CMYK
Three steps, all in your browser.
- 1
Enter a color
Type or paste a code in any format, or use the picker.
- 2
See every format
The converted values update as you type, in every format at once.
- 3
Copy the codes
Copy any color code in one click, or share the page link.
RGB to CMYK: what to know
RGB to CMYK converts a screen color into cyan, magenta, yellow and black ink percentages. Screens create color by adding red, green and blue light; printers subtract light with ink on paper. The standard formula takes black (K) as 1 minus the largest RGB channel, then works out how much cyan, magenta and yellow are needed for the rest.
Not every screen color can be printed. Very saturated blues, greens and oranges sit outside what common CMYK inks can reproduce, so they print duller. The converter gives you the numbers; a soft proof in your layout software, or a printed proof, shows how far they shift.
For professional print, CMYK values depend on the press, ink and paper, described by an ICC profile such as a coated or uncoated standard. Use the values here as a starting point and confirm critical colors with your printer.
Popular uses
- Preparing web colors for business cards and flyers
- Filling in CMYK values in a print brand guide
- Checking how much ink a color needs
- Talking to a print shop about color
Tips for the best result
- Ask your printer which color profile they use and convert in your layout app with it for final files.
- Pure RGB black (#000000) converts to K 100% only; some printers prefer a 'rich black' for large areas.
- If an exact brand color matters, consider a Pantone spot color instead of CMYK.
Read how JustYourPalette works, browse named colors and curated palettes, and see our privacy details. Colors you enter and images you open are processed in your browser and are never sent to our server.