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File Conversion Tools
Convert CMYK process ink percentages into approximate RGB screen colors and HEX codes. Features discrete channel inputs, color preview swatch, and quick copy actions.
Follow these simple steps to get instant, accurate results directly in your browser:
Input Cyan, Magenta, Yellow, and Black / Key (K) percentages between 0% and 100%. Decimal values (such as 12.5) are fully supported.
Review the calculated Red, Green, and Blue 8-bit integer channels (0–255), standard CSS rgb(...) declaration, and equivalent HEX code.
Click 'Copy' to copy the CSS declaration, discrete channels, or hexadecimal string directly to your clipboard.
This converter calculates an approximate RGB equivalent from CMYK percentages using a standard mathematical formula.
CMYK represents subtractive printing ink percentages (Cyan, Magenta, Yellow, and Black / Key from 0% to 100%), whereas RGB represents additive screen light channels (Red, Green, and Blue from 0 to 255). This tool computes the standard mathematical mapping: R = Math.round(255 × (1 - C/100) × (1 - K/100)), G = Math.round(255 × (1 - M/100) × (1 - K/100)), and B = Math.round(255 × (1 - Y/100) × (1 - K/100)).
Actual print appearance can vary due to ICC profiles, printer/press characteristics, inks, and paper/substrate. This converter provides a mathematical baseline for digital previews and interface design rather than certified color-managed print proofing.
Calculates approximate RGB values from CMYK percentages using the standard subtractive-to-additive formula.
Applies Math.round() consistently to all three RGB channels for reliable 8-bit integer coordinates.
Renders an instant visual color swatch derived directly from the computed RGB values.
CMYK to RGB conversion runs locally in your browser. All calculations execute on your device with no network requests.
Translate CMYK brand guideline ink specifications into approximate RGB screen values for digital mockups and web prototypes.
Generate standard CSS rgb(...) and HEX color declarations from print design documents.
Look up approximate screen equivalents when cataloging print-first design tokens in web style guides.
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