RGB to CMYK Converter
Convert RGB colors to CMYK instantly. Paste a value below and copy the result.
Also in
About this conversion
RGB describes a color by its red, green, and blue light components, each from 0 to 255. It matches how screens physically produce color, which makes it the natural format for programmatic color manipulation in CSS and JavaScript.
CMYK is the subtractive color model used in printing: cyan, magenta, yellow, and key (black) ink percentages. Screens use additive RGB light, so converting between the two is an approximation. The result is useful for reference, but final print colors depend on the printer's color profile.
To convert RGB to CMYK, the color is first interpreted in the sRGB color space and then expressed in CMYK notation. Paste a RGB value like rgb(31, 162, 255) above and copy the CMYK result. The conversion happens instantly in your browser, and nothing is uploaded.
Note that CMYK conversion here uses the standard formula without an ICC color profile. The values are a good reference for matching screen colors to print, but the exact printed result depends on the printer, ink, and paper, so always confirm critical colors in your print workflow.