Can You Change QR Code Colors? Color Design Rules
Why Colored QR Codes Still Work
QR code scanners recognize contrast between "light" and "dark" areas, not specific colors. Any color combination with sufficient contrast ratio will scan successfully.
For example, dark navy modules on a white background, or black modules on a light yellow background work fine. Brand colors can be freely incorporated as long as contrast rules are followed.
Three Rules to Follow
Rules for changing QR code colors:
- Dark colors for modules, light colors for background: Scanners recognize dark areas as modules (data). Reversing this relationship causes scan failure
- Ensure sufficient contrast ratio: Aim for WCAG contrast ratio of 4.5:1 or higher. Avoid light gray on white or pastel-on-pastel combinations
- Don't use gradients: Color variation within modules blurs light-dark boundaries, causing scan errors
Color Combinations to Avoid
These color schemes cause scanning errors:
- White modules on dark background (inverted): Scanners misinterpret light and dark
- Red and green combinations: Beyond color vision accessibility, some camera sensors show insufficient contrast
- Yellow modules on white background: Insufficient contrast for recognition
- Multi-colored modules: Varying module colors within one QR code creates uneven contrast
For creative designs, keep module color uniform and place logos or decorations in the center area.