Easy and quick tool to test color accessibility for various color blind conditions.
Accessibility
WebAim
Simple tool for checking color contrast and a huge resource of web accessibility.
Tanaguru
Helps you find the contrast ratio and also can suggest you good contrast alternatives.
Ace
Free tool to find out if your website is ADA & WCAG compliant or not with a detailed report.
Koa11y
An open-source desktop app that allows you to automatically detect accessibility (a11y) issues on webpages.
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Sim Daltonism
Open source color blindness simulator app for iOS and Mac that lets you use camera or screen.
A11yresources
An amazing growing master collection of accessibility tools and resources.
WhoCanUse
Understand how color contrast can affect different people with visual impairments.
Stark
Plugin for Figma, Sketch & Adobe Xd to make digital products more accessible.
Contrast Ratio
Super easy and quick tool to calculate color contrast ratio using WCAG 2.0.