Color Audit
Scan a site's real colors - the near-duplicates, the drift, and the pairs that fail WCAG contrast.
Color Audit reads a site's authored CSS, pulls out every color it uses, groups the near-duplicates, and - the part other color tools skip - checks the foreground and background pairs it actually uses against WCAG 2.2 contrast thresholds.
Fetches the page's stylesheets and analyzes them. Some sites block automated requests or load styles from another domain - if a scan comes back empty, use Paste CSS.
How accurate is this? Color Audit reads authored CSS, not the rendered page.
It pulls colors and same-rule foreground/background pairs straight from the stylesheets, so colors applied by JavaScript or images, or a background inherited from a parent element, can be missed - and pairs it can't resolve are skipped rather than guessed. A fast first pass, not a substitute for a full accessibility audit with Vesper Audit.