Beautiful and accessible color palettes based on WCAG Guidelines of contrast ratios.
Accessibility
Color Oracle
Free open source real time color blindness simulator for Windows, Mac and Linux.
Color Review
Easy and intuitive tool to calculate color contrast ratio and see preview in real time.
ColorBox
Simple and intuitive tool to help you quickly choose accessible colors sets.
Colorific
Easy and quick tool to test color accessibility for various color blind conditions.
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.