HEX to CMYK, via RGB
HEX #2563EB → RGB(37, 99, 235) → CMYK(84%, 58%, 0%, 8%) A HEX code is just RGB written in base-16 — the first two digits are red, the next two are green, the last two are blue. Converting to CMYK always goes through RGB as an intermediate step, whether that's shown explicitly or not.
Why this is an estimate, not a print-accurate conversion
There's no single, universally correct way to turn a screen color into CMYK. A real printing press's actual CMYK output depends on the specific ink set, paper stock, and press calibration — professional print workflows use a color profile (ICC profiles like SWOP, FOGRA, or GRACoL) calibrated to the exact printer being used. This calculator uses the standard simplified, device-independent formula that every online CMYK converter is built on. It's a useful, consistent estimate for screen mockups or a rough sense of the values — it isn't a substitute for proofing through your actual print software before sending a job to a commercial printer.
Colors with RGB, HEX, and HSL values
Frequently asked questions
How do I convert a HEX code to CMYK?
Enter the hex code above — it's converted to RGB first, then to CMYK, the same path any hex-to-CMYK conversion takes even when the RGB step isn't shown.
Is this CMYK value exactly what a printer will produce?
No — treat it as a close estimate, not a guarantee. Real print output depends on the specific ink, paper, and press profile in use, which this calculator has no way to know. For final print production, proof the color through your actual print software's color profile rather than relying on this or any generic online CMYK converter.
Can I enter a 3-digit hex code?
Yes. A shorthand code like #25E is expanded the same way browsers do — each digit is doubled, so #25E becomes #2255EE before converting.