Contrast checking is now live in the editor
2026-08-21 · 2 min read
Colour choice is the most common reason a nicely designed code fails to scan: a fashionable pastel foreground on a light background can look great and still not have enough contrast for a phone camera to lock onto the modules.
The editor now checks the contrast ratio between your foreground and background live, as you pick colours, using the same ratio the web accessibility guidelines use. A pairing that would fail is flagged before you download anything, not after it's printed.
It's on by default for every static and dynamic code, and it accounts for gradients and a logo in the middle, not just a flat two-colour pairing.