CMYK to RGB Converter
Turn print CMYK ink values into screen RGB and hex.
How to use
- 1 Enter the cyan, magenta, yellow and key (black) values as percentages from 0 to 100.
- 2 Read the resulting rgb() string and matching hex code.
- 3 Check the live swatch to confirm the colour looks right.
- 4 Copy the RGB or hex value with one click.
About CMYK to RGB Converter
The CMYK to RGB Converter translates the four-channel ink model used by printers into the red, green and blue values your screen understands.
CMYK describes how much cyan, magenta, yellow and key (black) ink is laid on white paper, while RGB describes how much coloured light a display emits, so designers constantly need to move a colour between the two worlds when a print artwork has to appear on a website, in an email or inside a slide deck.
Enter each channel as a percentage from 0 to 100 and the tool applies the standard device conversion — red equals 255 times one-minus-cyan times one-minus-key, and likewise for green and blue — giving you an exact rgb() string, the matching uppercase hex code and a live colour swatch so you can eyeball the result.
Because CMYK is a subtractive, smaller gamut than RGB, the on-screen colour is a faithful mathematical mapping rather than a colour-managed proof, which is perfect for quick reference, mock-ups and CSS.
Everything runs locally in your browser: nothing about your colours is uploaded, logged or stored, and the converter keeps working offline once the page has loaded, so it is safe for confidential brand work.
FAQ
Why does my printed colour look different on screen?
CMYK is a subtractive ink model with a smaller gamut than RGB light. The conversion is mathematically exact, but a true match needs a colour-managed ICC profile, which a browser cannot apply.
What range should I enter for each channel?
Each CMYK channel is a percentage from 0 to 100. Values outside that range are rejected with a clear message.