QR code design refers to the practice of customizing the visual appearance of QR codes beyond the standard black-and-white pattern. Design customizations can include brand colors, rounded modules, gradient fills, custom finder patterns, and embedded logos. The goal is to make QR codes visually appealing and on-brand while maintaining reliable scannability.
The key constraint in QR code design is maintaining sufficient contrast between the foreground modules and the background. The QR code specification requires a minimum contrast ratio for reliable scanning, and deviating too far from the standard black-on-white pattern can cause scanning failures. Graphic design books on Amazon discuss design principles.
Popular design customizations include changing the module shape from squares to circles or rounded squares, using brand colors for the foreground while keeping the background white, adding a logo in the center (compensated by high error correction), and incorporating the QR code into a larger graphic design.
When designing custom QR codes, always test the result with multiple scanning apps and devices before deploying. What looks good on screen may not scan reliably when printed, especially at small sizes or on textured materials. Brand identity books on Amazon cover brand integration strategies.