Super Boring Tools

Search tools

Find a tool by name or what it does.

CMYK to RGB Converter

Convert CMYK ink percentages to RGB and hex with a live swatch, plus a reverse RGB to CMYK view. Copy any format.

Conversion direction
CMYK color
%
%
%
%

Enter each ink from 0 to 100%. Converted live as you type, all in your browser.

121
Red
170
Green
242
Blue

Formats

RGBrgb(121, 170, 242)
HEX#79aaf2
CMYKcmyk(50%, 30%, 0%, 5%)

Everything is converted in your browser. Nothing is uploaded.

How to convert CMYK to RGB

  1. Enter CMYK values

    Type the cyan, magenta, yellow, and black percentages from 0 to 100, or drag each slider to the value you want.

  2. Read the result

    The matching red, green, and blue channels, a hex code, and a live swatch update on every change.

  3. Copy a format

    Use the copy button on any row to grab one notation, or Copy all formats to take RGB, hex, and CMYK together.

  4. Reverse it if needed

    Switch to RGB to CMYK to enter a screen color or hex code and read back the four ink percentages.

Why use this tool

CMYK to RGB and hex at once

A single set of ink percentages produces the red, green, and blue channels, an rgb() string, and a hex code together.

Reverse RGB to CMYK view

Flip the direction to enter a screen color or hex code and read the cyan, magenta, yellow, and black percentages it maps to.

Type it or drag it

Each channel has both a number field and a slider, and in RGB mode a color picker and hex field stay in sync as you adjust.

Values clamped and rounded

Percentages outside 0 to 100 and channels outside 0 to 255 are clamped, so the output is always a valid color.

Runs entirely in your browser

Everything happens on your device; nothing is uploaded, sent to a server, or stored.

About this tool

This tool converts CMYK color values into their RGB and hex equivalents. Enter the cyan, magenta, yellow, and black percentages from 0 to 100, either by typing a number or dragging a slider, and the matching red, green, and blue channels, a hex code, and a live swatch update on every change. A reverse mode does the opposite, reading an RGB color or hex code and returning the four CMYK percentages, so you can move between the print and screen models in either direction.

CMYK is the four-ink model used for print, while screens mix red, green, and blue light, so converting between them is a common step when a design has to work in both places. The conversion here uses the standard arithmetic formula, which is fast and predictable but does not account for a printer profile or paper stock, so treat the result as a close starting point rather than an exact proof. Values outside their range are clamped, and anything that is not a number shows a short note instead of a wrong answer.

Copy any single format with the button on its row, or take RGB, hex, and CMYK all at once. Color work rarely stops at one conversion: hex to rgb breaks a hex code into channels, rgb to hex goes the other way, and the color converter reads RGB, HSL, and HSV together.

Frequently asked questions

How do I convert CMYK to RGB?
Enter the cyan, magenta, yellow, and black values as percentages from 0 to 100. The red, green, and blue channels and a hex code appear immediately, using the standard formula where each channel is 255 times one minus the ink amount times one minus the black amount.
Why do the print colors look different from my screen?
CMYK inks and RGB light cover different ranges of color, and a real print also depends on the printer, ink, and paper. This converter uses the plain formula with no color profile, so the RGB result is a close preview, not a guaranteed match to a printed proof.
Can I convert RGB back to CMYK?
Yes. Switch the direction to RGB to CMYK, then enter red, green, and blue values, pick a color, or paste a hex code. The tool returns the four CMYK percentages, with black taken from the darkest channel.
What values can I enter?
CMYK channels accept 0 to 100 percent and RGB channels accept 0 to 255. Numbers outside those ranges are clamped and decimals are handled, so you always get a valid color instead of a broken one.
Is my data uploaded anywhere?
No. Everything runs in your browser; nothing is sent to a server or stored.

Related tools