CMYK vs RGB for Printing: Why Your Logo Colors Look Wrong?
Technical Guide

CMYK vs RGB for Printing: Why Your Logo Colors Look Wrong?

📅 Feb 03, 2026 👤 Cody Kang

You have just received your shipment of custom printed boxes. You excitedly open the first carton, but your heart sinks. The vibrant, electric blue logo you designed on your MacBook looks dull, muddy, and lifeless on the cardboard. What happened?

The culprit is the mismatch between CMYK vs RGB for printing.

This is the #1 pain point we hear from Procurement Managers and Brand Owners at Gangda Packaging. Your designer works in one color mode, but our printing presses require another. Understanding this difference is critical to saving your budget and your brand image.

1. What is the Difference? (The Short Answer)

To solve the “dull color” crisis, you must understand how color is created:

  • RGB (Red, Green, Blue): This is for Screens. It uses light to create color. When you mix all colors, you get white. It has a massive color range (gamut), capable of displaying bright neons.
  • CMYK (Cyan, Magenta, Yellow, Key/Black): This is for Physical Printing. It uses ink to subtract light from white paper. When you mix all colors, you get a muddy black. Its color range is much smaller than RGB.