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RGB to CMYK Converter

Convert any color between HEX, RGB, HSL and CMYK notation with a live preview swatch — right in your browser.

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Parsing color value
Converting color spaces
Rendering preview
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Result

This page opens the color converter with RGB preselected — enter a value like rgb(255, 0, 0) or the bare triplet 255, 0, 0 and run it to get the cyan, magenta, yellow and key (black) percentages.

CMYK is the subtractive model used by printers: screen colors are mixed from emitted light, but ink on paper absorbs it, so print shops ask for CMYK percentages when you prepare business cards, flyers or packaging. This tool uses the standard formula-based conversion — for exact press output your print shop's ICC profile has the final word.

The full converter also returns HEX and HSL for the same input, lets you pick a color visually and previews it on a swatch — all calculated locally in your browser, with nothing sent to any server.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Converts between HEX, RGB, HSL and CMYK color models.
  • Native color picker that fills the value field in the selected format.
  • Live preview swatch plus one-click copy of all four notations.

Key Benefits

✓ One input, every notation: type a color once and read it back as HEX, RGB, HSL and CMYK simultaneously.
✓ Forgiving parser: accepts #fff, #3b82f6, rgb(255, 0, 0), bare "255, 0, 0" triplets and hsl(120, 50%, 50%) alike.
✓ Runs entirely in your browser — color values are never uploaded anywhere.

Use Cases

  • • Turn the #rrggbb code from a brand book into rgb() or hsl() notation before wiring hover and disabled states in CSS.
  • • Convert an on-screen RGB color to CMYK percentages to sanity-check how it will separate before sending business cards or flyers to print.
  • • Eyedrop a color with the built-in picker and copy all four notations at once for a design-to-code handoff.