Конвертер цветов из CMYK в HEX
Tool guide
You start with four CMYK numbers from a print file and end with the six-digit HEX code a browser understands. The maths is the plain formula with no ICC profile, so the result is visually close rather than a colour-proof match. Use it when a brand colour was signed off for leaflets and the landing page now has to match it. Everything is computed in your browser. See also: convert a HEX code back to CMYK inks, split a HEX code into RGB channels, eyedropper with HSV and CMYK fields.
CMYK describes ink on paper, HEX describes light from pixels. A display covers a wider gamut, so saturated colours come out brighter after conversion, and a rich four-plate black collapses into plain #000000. Only a conversion through the ICC profile of a specific press and paper stock will match a proof.
The standard naive conversion: each RGB channel is 255 × (1 − C) × (1 − K), then the values are written out in hexadecimal. No Coated FOGRA or US Web Coated profile is applied. That is the same simplification the built-in pickers in Figma and most online converters make.
The fields take any value from 0 to 100 and the browser will accept a decimal, but it barely moves the result: a tenth of a percent falls inside the same 8-bit channel value. Rounding to whole numbers gives you the identical HEX code.
There is a separate HEX to CMYK page in the same section. Note that a round trip does not always return your original numbers, because the reverse formula always pushes as much as it can into the K channel, so C 15 M 0 Y 90 K 5 can come back as a different set with the same on-screen colour.
Nowhere. The arithmetic runs in the page script and no request carries your values off the page, so an unreleased client brand colour is safe to test here. Close the tab and nothing is left behind in the browser.
Yes. Four number fields and two buttons fit a small screen, and number inputs bring up the numeric keypad. The copy button writes to the system clipboard on both iOS and Android, so the code can go straight into mobile Figma or a note.
Before: C = 0, M = 100, Y = 100, K = 0
After: #FF0000 — pure red, noticeably brighter on screen than in print
Before: C = 15, M = 0, Y = 90, K = 5
After: #CEF218
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