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designVercel

Accessible Charts

MUST

MUST: Accessible charts (color-blind-friendly palettes)

Use color-blind-friendly palettes

Bad

Good

Why it matters

About 8% of men and 0.5% of women have color vision deficiencies. Use color palettes designed for color blindness (avoid red-green combinations), and supplement color with patterns, labels, or textures in data visualizations.

References

Built by Gleb Stroganov, design engineer at Evil Martians.

The rules come from other people's skills and guidelines — Vercel, Rauno Freiberg, @Ibelick, impeccable, Emil Kowalski, Tailwind, RAMS — each one credited on the Sources page. The work here is extraction and wiring: every rule is pulled into one corpus, given a good and a bad example you can operate, a MUST/SHOULD/NEVER rule an agent can paste, and a link back to where it came from.