QR code colors and contrast: what scans and what doesn't
· 6 min read
Which QR code colors actually scan? The rules for background color, contrast, inverted codes, and the red-ink trap, drawn from the QR spec and scanner source code.
Which QR code colors actually scan? The rules for background color, contrast, inverted codes, and the red-ink trap, drawn from the QR spec and scanner source code.