CMYK, RGB, and Rich Black: Color Settings That Keep QR Codes Scannable

1. Use 100% K

For offset and digital print, set the code to 0C 0M 0Y 100K. A rich black built from four inks can misregister slightly, creating colored fringes on small modules and softening edges.

2. Avoid Conversion Surprises

RGB black (0,0,0) converted automatically to CMYK can become a four-ink mix. Create the code in CMYK or convert it deliberately and check the separations.

3. Overprint

Make sure black overprint settings do not cause modules to merge with light-colored knockout areas in the background.

4. Brand Colors

If you must use a color, choose a dark one with strong luminance contrast against the background. See our contrast guide for numeric targets.