Print glossary
CMYK: definition
CMYK is the colour model of printing inks: cyan, magenta, yellow and black (K). Print files are prepared in CMYK because some screen colours (RGB) cannot be printed.
- Inks
- C, M, Y, K
- Black text
- 100% K
- Opposite
- RGB, screen colours
More about the term
Colours outside the CMYK gamut, e.g. neon green, fade after conversion. Rich black is printed with other inks added, e.g. C40 M30 Y30 K100. See CMYK vs RGB.
Frequently asked questions
Why K and not B?
K stands for “key”, the key plate carrying black.
Will a print shop accept RGB?
Many digital print shops do and convert it themselves. Check the print shop’s requirements.
See also
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