miji.beA color QR code replaces the traditional black-and-white palette with custom foreground (cell) and background colors to match brand identity or aesthetic preferences. While visually appealing, color QR codes must follow specific rules to remain scannable.
QR code scanning relies on contrast between light (background) and dark (cell) areas. Scanners detect this difference to decode data, so insufficient contrast makes read failures more likely.
Examples of color combinations include dark navy on white, dark green on white, and black on pastel yellow. Combinations to avoid include yellow on white, light blue on white, and red on green (for color vision accessibility). Inverted designs with dark backgrounds and light cells are technically possible but risk scan failures on some readers and are not recommended.
Shortened URLs increase design flexibility for color QR codes. Shorter URLs produce lower-version QR codes (fewer cells), making each cell larger. Larger cells create clearer color boundaries, helping maintain scan accuracy even with custom colors.
Placing a brand logo at the center of a QR code leverages error correction (Level H can recover up to 30% data loss). When combining a logo with color customization, set error correction to Level H and always test scanning across multiple devices.