This is a naive conversion without an ICC colour profile. Screen RGB is additive light and print CMYK is subtractive ink, so their gamuts do not overlap. Treat these numbers as a starting point and confirm against a printed swatch or a soft proof before going to press.
Round-trip drift: up to 1 per channel, caused by rounding the percentages.
Tool guide
About HEX to CMYK Converter
Brand guidelines usually record color as a hex value such as #4f46e5, because the palette was designed for screens first. When the same brand goes onto business cards, packaging, or a brochure, the print shop asks for CMYK percentages instead.
This converter turns hex into CMYK, and runs the other direction when a supplier sends you CMYK numbers. It is a naive conversion with no ICC color profile, so the result is a starting point for a print job, not a color-managed proof.
How to convert HEX to CMYK
- Paste the hex value from your brand guide, with or without the leading hash.
- Read the four CMYK percentages and check the preview against what you expected on screen.
- Use the direction toggle when a printer gives you CMYK and you need the matching hex.
- Check the round-trip readout before production, so you know how far the value moved.
When you would use it
- Your brand manual only lists hex codes, and the print shop needs CMYK to quote a job.
- You are moving a website palette onto printed collateral and want the closest ink mix per accent color.
- You are checking a press-ready file to confirm the swatch percentages match the brand color.
- A supplier sends CMYK build numbers and you need the hex for the digital version of the campaign.
What the numbers mean
Hex encodes red, green, and blue light as three pairs of hexadecimal digits. CMYK describes how much cyan, magenta, yellow, and black ink covers the paper, each from 0 to 100 percent.
- RGB is additive: the screen emits light, and more of every channel moves toward white.
- CMYK is subtractive: ink absorbs light reflected off paper, and more of every ink moves toward a muddy dark.
- The K channel exists because cyan, magenta, and yellow together give a weak brown rather than a clean black.
- The two gamuts overlap but do not match, so some colors have no honest CMYK equivalent.
HEX to CMYK FAQ
- Why does my bright blue look dull once it is printed?
- That color is out of gamut. Vivid blues, greens, and fluorescent tones fall outside what four process inks can reproduce, so you get the nearest printable mix and the printed result looks darker and grayer.
- Are these values accurate enough to send to a printer?
- Treat them as a first draft. With no ICC profile involved, the result ignores paper stock, ink set, and press. Confirm the final color against a printed swatch book or a profiled soft proof.
- Why does converting back give a slightly different hex?
- CMYK percentages are rounded to whole numbers, so precision is lost. The round-trip readout shows that drift, usually one step per channel. It is rounding, not an error.
- Is my color data sent anywhere?
- No. The math runs entirely in your browser on wetool.site, so the values you enter are never uploaded to a server.
- Can it match a Pantone spot color?
- No. This page converts between hex and process CMYK only. Spot color matching needs a physical guide or your printer's own library.
Screen color vs press color
A monitor makes color by emitting light, and a press makes color by laying ink that absorbs it. The two systems reach different extremes, which is why a formula alone cannot promise a match. Use the converted CMYK to set up artwork, then let a printed proof decide the final numbers.
Checks before you send files to print
A few habits keep brand color consistent between the site and the printed piece.
- Record both the hex and the agreed CMYK build in the brand guide, so nobody re-derives the ink mix later.
- Flag your most saturated accent colors early; they shift the most on press.
- Keep pure black text as a single K channel rather than a four-ink mix, to avoid registration problems on small type.