CMYK to RGB & RGB to CMYK Converter
Free online CMYK to RGB and RGB to CMYK converter with real-time preview and a simple approximate conversion for designers and printers. Convert colors between CMYK (print) and RGB (digital) color spaces.
Input Settings
Output
CMYK
cmyk(0%, 27%, 0%, 63%)RGB
rgb(94, 69, 94)HEX
#5E455EAbout CMYK to RGB & RGB to CMYK Converter
The CMYK to RGB Converter is an essential tool for designers and printers who need to convert between CMYK (Cyan, Magenta, Yellow, Key/Black) and RGB (Red, Green, Blue) color models. CMYK is the standard color model for print media, while RGB is used for digital displays. This tool provides accurate conversion between these two color spaces, helping ensure your colors look consistent across different media.
Why use a CMYK to RGB & RGB to CMYK Converter?
Converting between CMYK and RGB is crucial when preparing designs for both print and digital media. Print colors (CMYK) often look different from screen colors (RGB) due to the different color gamuts. This tool helps you preview how colors will appear when converted between these formats, avoiding unexpected color shifts in your final output. It saves time and ensures color accuracy across different media types.
Who is it for?
This tool is ideal for graphic designers working on print projects, print shop professionals, web designers preparing print materials, marketing professionals managing brand colors across media, photographers preparing images for print, and anyone who needs accurate color conversion between print and digital formats.
How to use the tool
Select your conversion direction: CMYK to RGB or RGB to CMYK
For CMYK to RGB: Enter Cyan (0-100%), Magenta (0-100%), Yellow (0-100%), and Key/Black (0-100%)
For RGB to CMYK: Enter Red (0-255), Green (0-255), and Blue (0-255) values
View the instant conversion results with visual color preview
Copy the converted values in your preferred format
Note: Some RGB colors cannot be perfectly reproduced in CMYK
Frequently Asked Questions
How do I convert CMYK to RGB?
Enter four values: C (cyan), M (magenta), Y (yellow), K (key/black) — each 0-100%. The tool outputs the approximate matching RGB values (0-255 each). Type `cmyk(0%, 66%, 80%, 0%)` into the text box, or use the sliders and number fields. Note: this conversion is an APPROXIMATION — see the accuracy FAQ for the critical caveat about gamut and ICC profiles. Conversion runs entirely in your browser.
What's the difference between CMYK and RGB colour formats?
They describe fundamentally different colour models. RGB is additive (light combines on a screen — red + green + blue = white), used for displays. Each channel is 0-255. CMYK is subtractive (ink absorbs light on paper — cyan + magenta + yellow ≈ black, with K added because mixed ink isn't true black), used for print. Each channel is 0-100%. They cover different colour gamuts: screens can display vivid colours that print can't reproduce; print can render some colours screens render approximately. Conversion between them is inherently lossy.
Is the CMYK to RGB conversion accurate?
It's APPROXIMATE — and this is the critical caveat. There's no universal mathematical formula that converts CMYK to RGB accurately because the result depends on the specific ink set, paper, printer, and viewing conditions. Professional print workflows use ICC colour profiles (USA SWOP, Coated FOGRA39, GRACoL, etc.) that map each printer's specific output. This tool uses the simple formula R = 255 × (1 − C) × (1 − K), which ignores ink and paper, as an approximation (good enough for screen previews of print designs); for production print work, use colour-managed software loaded with the printer's specific ICC profile.
Can I use CMYK values directly in CSS?
No — CSS doesn't support CMYK natively. CSS Color 4 includes a `device-cmyk()` function for future device-targeted output, but it's not widely supported and not appropriate for screen rendering. For web design, work in RGB/HEX/HSL. CMYK is exclusively a print format — used in print-design software. If you need to specify CMYK values for a project that will be printed, set them in your print-design tool's CMYK colour space, not in CSS.
What format should I enter CMYK values in?
Three ways to enter CMYK. (1) Type `cmyk(0%, 66%, 80%, 0%)` in the text box — the `%` signs and commas are optional inside the parentheses, but bare values without `cmyk(...)` are not parsed. (2) Four sliders or number fields. (3) The colour picker. Each value is 0-100% (clamped to that range). C=cyan, M=magenta, Y=yellow, K=key (black). High K with low CMY produces darker colours; pure C+M+Y without K produces a 'rich' deep colour but isn't true black on most papers.
Why are some CMYK colours impossible to display on my screen?
The simple formula this tool uses never leaves the sRGB gamut, so it does not flag out-of-gamut CMYK colours. Real print inks, though, can produce some colours that screens cannot, and the conversion then shows the closest screen approximation, which may look duller or shifted in hue compared to the actual print. The only warning here is on the RGB to CMYK side: it appears when the rounded CMYK percentages do not reproduce your RGB value. For an accurate screen preview of print colours, use a colour-managed workflow with the printer's ICC profile and soft-proofing enabled.
When should I use CMYK vs RGB?
CMYK for print: brochures, posters, business cards, magazines, packaging — anything physically printed with CMYK inks. RGB for screen: web, mobile apps, video, digital signage, social media. The two are not interchangeable workflows: a vibrant RGB colour may not print as it appears on screen (gamut issues), and a print-optimised CMYK colour may look washed out on screen. For projects spanning both (print collateral + digital), design in RGB and convert to CMYK with the printer's ICC profile only for the print version.
What's the reverse — how do I convert RGB to CMYK?
Switch this tool to RGB to CMYK mode for a quick approximation (same caveats as CMYK→RGB, with CMYK shown as whole percentages). For production work, use colour-managed software with the destination printer's ICC profile loaded. For accurate print prep, always use ICC-profile-aware software — the result depends on the specific paper, printer, and ink combination. For previewing only, the approximation is fine; for production print, use professional tooling.
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