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WCAG Color Contrast Checker

Free#15 of 23 in Color Contrast Checker Software

WCAG Color Contrast Checker: A free Chrome extension for checking rendered page colors and manually entered pairs. Ranked #15 of 23 in Color Contrast Checker Software by our editors (7.0/10); pricing: Free plan; best for chrome users checking rendered page colors.

7.0/10Editor score

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WCAG Color Contrast Checker7.0 Visit site

At a glance

Editor score
7.0 / 10
Pricing
Free plan
Best for
Chrome users checking rendered page colors
Free plan
Yes
Paid from
None
WCAG standards
2.2
Facts checked
4 Oct 2026

Where it wins
- Evaluates computed CSS colors, including RGBA opacity.
- Picks colors from a page or tests manually entered colors.
- Simulates color blindness and reevaluates contrast.
Where it doesn't
- Chrome extension only.
- Does not suggest alternative colors.
- Results refresh with DOM changes unless refresh is disabled.

Our verdict on WCAG Color Contrast Checker

For Chrome users who need to check text and graphics against WCAG 2.2, WCAG Color Contrast Checker examines foreground and background colors on a web page. It reads the elements’ computed CSS color and background-color values, accounting for opacity in RGBA colors. The extension also supports manual color entry and picking colors directly from the page, so it can check specific pairs as well as colors already rendered in the browser. Its focus is practical contrast checking rather than a broader accessibility workflow.

A notable capability is color-blindness simulation: the extension can simulate color blindness and reevaluate contrast in those simulations. Results refresh when the page DOM changes, and users can disable that refresh behavior if frequent page changes are an issue. This makes the checker relevant for reviewing pages whose rendered styles or content change, while keeping control over when results update. It is a Chrome extension, so its workflow is tied to checking pages in Chrome rather than working across multiple platforms.

The product is free, and its published capabilities include contrast checks for text and graphics. It does not provide color suggestions, so teams looking for recommended replacements for failing color pairs will need another tool or process. Solo users and small teams who want direct checks on rendered page colors, manual testing, and simulation are a good fit; those who need suggested fixes or a wider platform footprint should look elsewhere. Its narrow scope suits focused browser-based contrast reviews, not a complete accessibility testing suite.

Your product? Our editors can test WCAG Color Contrast Checker in depth and publish a review, labelled as paid · from $99/mo →

WCAG Color Contrast Checker pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on rumoroso.bitbucket.io

WCAG Color Contrast Checker fact sheet

Free plan	Yes
Paid from	None
WCAG standards	2.2
Contrast modes	Text and graphics
Contrast suggestions	No
Design integrations	Not verified
Platforms	Chrome extension
Batch color-pair checks	Not verified
Deployment	Browser extension
Platforms	Chrome extension
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan
Website	rumoroso.bitbucket.io
Facts checked	4 Oct 2026

Alternatives to WCAG Color Contrast Checker

See all WCAG Color Contrast Checker alternatives →

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Featured on iTechGuides

WCAG Color Contrast Checker is listed in our Color Contrast Checker Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 20 Oct 2026 · How we research and update