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CMYK Converter

Approximate RGB ↔ CMYK conversion with notes on printing limits.

RGB / HEX → CMYK

CMYK → RGB

C %
M %
Y %
K %

CMYK values here use the standard device-independent formula. Real print colors depend on the press, paper and ICC profile.

About the CMYK Converter

Get a quick CMYK estimate for screen colors or preview CMYK values on screen. The conversion is device-independent and approximate — real print results depend on the printer, paper and ICC profile.

How to use it

  1. Enter a HEX or RGB color to get CMYK percentages.
  2. Or enter C, M, Y and K values to preview the color.
  3. Read the gamut warning for very saturated colors.
  4. Ask your printer for an ICC-managed conversion for final artwork.

Examples

  • #008080 → cmyk(100%, 0%, 0%, 50%)
  • cmyk(0%, 50%, 100%, 0%) → #FF8000

Frequently asked questions

Why is it called approximate?
Accurate CMYK requires a color profile for a specific press and paper. This tool uses the standard mathematical formula without a profile.
Why do bright screen colors look duller in print?
Many vivid RGB colors (especially bright blues and greens) are outside the CMYK printing gamut.
Should I use this for professional print jobs?
Use it for planning. For final files, convert in professional software with the printer's ICC profile.

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