Contrast Check

by dev.kostiuk · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Check WCAG contrast ratios between foreground and background colors.

Users

0 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#344K

#265K among extensions

Version

1.0.1

updated 11 Aug 2026

Users

monthly, 3 months

Latest, 15 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Contrast Check

Contrast Check helps you verify readable color pairs against WCAG guidelines. How it works: • Pick foreground (text) and background colors with the color pickers or hex fields • See a live preview and the contrast ratio instantly • Get Pass/Fail for WCAG AA and AAA (normal and large text) • Optional: Sample text or background color from the current page with one click WCAG checks included: • AA normal text — 4.5:1 • AA large text — 3:1 • AAA normal text — 7:1 • AAA large text — 4.5:1 Privacy: • Runs only in your browser • No account, no sync, no server • Page colors are read locally when you choose to sample an element Free and offline — useful for designers, developers, and accessibility reviews.