Skill

color-contrast-accessibility

Provides color contrast and accessibility engineering: WCAG 2.2 thresholds (4.5:1, 3:1, 7:1, non-text 3:1), the relative-luminance and contrast-ratio math, known WCAG limitations and APCA (Lc values, WCAG 3 status), color vision deficiency types and prevalence, colorblind-safe palettes (Okabe-Ito, viridis), testing tooling and the full state matrix, plus dark-mode halation pitfalls. Use when verifying contrast, choosing accessible palettes or implementing dark mode.

Bundled with Coacus. Its trust score, security findings and other files are on the plugin page.

npx [email protected] add dandgabr/Coacus