RGB vs CMYK Color Modes
RGB and CMYK describe color using different models. Using the wrong one leads to washed-out print colors or unexpected screen rendering. Here is what each is for.
Quick comparison
| RGB | CMYK | |
|---|---|---|
| Stands for | Red, Green, Blue | Cyan, Magenta, Yellow, Key (Black) |
| Used for | Screens, web, digital | Print, offset, CMYK printers |
| Color mixing | Additive (light) | Subtractive (ink) |
| Range | 16.7 million colors | Narrower gamut |
| File formats | PNG, JPG, WebP, GIF | TIFF, PDF (CMYK-tagged) |
Why colors look different when printed
Screens emit light (additive — combining colors gets lighter). Print absorbs light (subtractive — adding ink gets darker). Vivid screen blues and greens often print duller because the CMYK gamut is smaller.
Practical advice
- Web and social media: work in RGB (sRGB specifically)
- Print materials: convert to CMYK in your design app before sending to printer
- Check with your print provider — some accept RGB PDFs and convert themselves
- Pantone spot colors are best for brand-critical colors across media
Frequently Asked Questions
Can I convert RGB images to CMYK online for free?
Basic conversion is possible, but color-critical print work requires proper ICC profile conversion in tools like Adobe Photoshop or Affinity Photo.
Why does my logo look different in print?
If the logo was designed in RGB, screen-vivid colors will appear duller in print. Redesign using CMYK values or Pantone codes for print consistency.