CMYK vs RGB: Why Your Print Colours Look Different to Your Screen

CMYK and RGB colour explained

"It looked much brighter on my screen!" is something every printer hears. The reason is simple: screens and printers create colour in completely different ways. Understanding the difference helps you get the colours you expect.

RGB: colour made from light

Phones, laptops and TVs mix red, green and blue light (RGB). Because screens glow, they can show extremely bright, vivid colours, like neon greens and electric blues.

CMYK: colour made from ink

Printers mix cyan, magenta, yellow and black ink (CMYK) on paper. Ink reflects light rather than producing it, so some very bright RGB colours simply can't be reproduced exactly in print. They come out slightly duller or shifted.

Which colours change the most?

  • Bright, vivid greens
  • Electric and neon blues
  • Bright oranges and purples
  • Very saturated pinks

Most other colours, including skin tones, neutrals and darker shades, print very close to how they look on screen.

How to get better colour in print

  1. Design in CMYK from the start if your software allows it.
  2. Convert RGB files to CMYK before sending, so you can see the shift yourself.
  3. Use your brand's CMYK values. A good brand guide lists CMYK, RGB and HEX values for each colour.
  4. For rich black on large areas, ask us about the best setup.
  5. Remember paper and finish matter. Uncoated, silk and gloss papers, and matt or soft touch lamination, all change how colour looks.

Do I have to convert my files?

No. If you upload RGB artwork, it's converted for print. But converting yourself means no surprises. We always send a digital proof, though bear in mind a screen proof is still shown in RGB.

Frequently asked questions

Should I use CMYK or RGB for print?

Use CMYK for anything printed, and RGB for screens, websites and social media.

Why do my printed colours look duller?

Some bright RGB screen colours can't be reproduced with CMYK inks, so they appear slightly less vivid in print.

Need help with colour?

Our design team can set up your files, or add our Design Service. Call 07769 200277.

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