RGB to CMYK Converter
Convert RGB screen colors to CMYK print values, with a live swatch.
Updates live as you type. This is a device-independent approximation (the standard formula for converting screen RGB to print CMYK) — real print output depends on your printer and paper's own ICC color profile, so treat this as a preview, not exact print color matching. Runs entirely in your browser.
Need the opposite? Use CMYK to RGB Converter
What is RGB to CMYK Converter?
Converts screen RGB values to their CMYK (Cyan, Magenta, Yellow, Key/black) equivalent — the color model used in print — with a live swatch and the matching hex code shown alongside. Enter R, G, and B as 0-255 values and the CMYK percentages update instantly as you type. This uses the standard device-independent formula for converting screen (additive, RGB) color to print (subtractive, CMYK) color, which is the best you can do without a specific printer and paper profile — it is not a match to any particular printer's actual output. Everything runs entirely in your browser; nothing you enter is sent to a server.
FAQ
No — real print output depends on your printer and paper's own ICC color profile. Treat this as a preview/estimate, not exact print color matching.
The hex equivalent of your RGB input is shown alongside the CMYK output and swatch, so you have both the screen and print representations of the same color in one place.
Each channel must be between 0 and 255 — an out-of-range value is flagged with an error message instead of producing a result.