CMYK vs RGB for professional printing
Last updated 2026-08-22
In short
RGB is the additive colour model screens use; CMYK is the subtractive model presses use. Bright RGB blues, greens and oranges fall outside the CMYK gamut and print duller, so artwork should be converted to CMYK and visually checked before printing rather than converted automatically at the press.
Why the shift happens
A screen emits light and can display colours ink cannot reproduce on paper. The most affected are electric blue, neon green, bright orange and vivid purple.
Converting properly
Convert in your design software with a profile suited to coated stock, then adjust the affected areas by eye. Automatic conversion at the press gives you no chance to correct.
When exact colour matters
Use a Pantone spot ink on an offset run. For digital runs, ask for a printed drawdown before committing the full quantity.
Frequently asked questions
Will my RGB file still print?
Yes, but it will be converted automatically and bright colours may shift noticeably. Convert it yourself first.
How do I guarantee an exact brand colour?
Specify a Pantone spot ink and print offset, or approve a printed drawdown before the run.