This Developer Tools extension allows you determine whether or not the color contrast on a site is WCAG 2.0 AA and AAA compliant.

  • ColorA11y
  • ColorA11y
  • ColorA11y
What is ColorA11y?
ColorA11y is a chrome extension which assesses color contrast ratio for compliance with WCAG 2.0 guidelines. Ensure your web design upholds accessibility standards. Best used with Mac's color picker.
Users: 1,000+
Rating: 4.00 (5)
Version: 1.3 (Last updated: 2015-06-20)
Creation date: 2015-06-19
Risk impact: Low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Size: 9.27K
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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ColorA11y allows you to easily select a foreground color and a background color, and determine whether or not the contrast ratio between the 2 colors is WCAG 2.0 compliant. ColorA11y can help validate the existence of web accessibility issues you think you already have with color contrast. This Developer Tools extension can also help verify you're technically adhering to the WCAG 2.0 color contrast guidelines. Simply open the Developer Tools in Chrome, and open the ColorA11y tab. Currently, this works best using Mac's color picker, and not the Windows native tool. I'm working on integrating this with Spectrum, and will have an update shortly.

User reviews
Not easy to use. Lacking basic ease of use functionality. May be broken in latest versions of Chrome. Tested in Chrome Version 68.0.3440.84 (Official Build) (64-bit)
by Nick Welsh Nick Welsh, 2018-08-08

a bit odd to figure out, but fantastic once you do! Highly recommended!
by Santina Croniser Santina Croniser, 2018-02-27
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Risk impact

ColorA11y is relatively safe to use as it requires very minimum permissions.

Risk likelihood

ColorA11y has earned a fairly good reputation and likely can be trusted.

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