Designing Readable QR Codes: Color, Contrast, and Margin

QR codes are surprisingly tolerant, but small choices can make or break scan success.

In this guide, we cover color selection, light/dark contrast, quiet zone margins,

and how error correction levels influence your design flexibility.

Tip: keep a contrast ratio above 4.5:1 for the modules vs. background,

and ensure a margin of at least 2 modules for most sizes.