Convert screen colors to print-ready CMYK values
Converts RGB (screen colors) to CMYK (print colors). RGB is an additive color model used by screens — mixing red, green, and blue light. CMYK is a subtractive model used by printers — combining cyan, magenta, yellow, and black inks.
Note: This conversion is approximate. Professional print workflows use ICC color profiles for accurate color matching; this tool provides a good starting point.
Screens use light (RGB, additive mixing) while printers use ink (CMYK, subtractive mixing). The CMYK color gamut is smaller than sRGB, so some bright screen colors cannot be exactly reproduced in print.
This provides a mathematical conversion without ICC profiles. For color-critical print work, use a professional tool with proper color management.
K stands for 'Key' (referring to the key plate in printing, which is typically black). It was chosen to avoid confusion with B for blue.
