Offset Printing vs. Digital Printing: Selecting Color Profiles (RGB vs. CMYK)

A common mistake in graphic design is sending an RGB file to a commercial offset printing house. When the finished boxes or flyers arrive, the colors look dull and washed out. Understanding printing technologies and color spaces is essential to prevent these mistakes.

RGB vs. CMYK Color Spaces

The differences between screen layouts and physical ink applications are defined by color models:

• RGB (Red, Green, Blue): An additive color model used by screens. Colors are created by projecting light, allowing for bright, glowing colors.
• CMYK (Cyan, Magenta, Yellow, Key/Black): A subtractive color model used by physical printers. Colors are created by mixing physical inks, which absorb light. The color spectrum is narrower than RGB.

Offset Printing vs. Digital Printing:

Offset printing uses custom metal plates to apply liquid inks to paper, making it highly cost-effective for large production runs. Digital printing applies toner or inkjet spray directly, making it ideal for small batches.

When preparing packaging box wraps or flyers, always convert your workspace profile to CMYK. This ensures that the colors you see on screen match the final printed product.