RGB to CMYK Converter

RGB (Red, Green, Blue) is the color model used by every screen and digital display. Colors are created by mixing light, with each channel ranging from 0 to 255. CMYK (Cyan, Magenta, Yellow, Key/Black) is the subtractive model used in commercial offset printing and professional inkjet printers, where colors are produced by absorbing light through layers of ink on paper.

When you design on screen in RGB but need to send files to a printer, you must convert your colors to CMYK. The two color spaces do not overlap perfectly — RGB can represent vivid neon colors that CMYK inks cannot reproduce, and vice versa. This tool uses the standard mathematical conversion, which gives you a reliable starting point for print-ready values.

For critical print work such as brand identity, packaging, or fine art reproduction, consider verifying the CMYK output against a physical proof. ICC color profiles and professional proofing workflows can further refine the match between what you see on screen and what comes off the press.