Helps you find the contrast ratio and also can suggest you good contrast alternatives.
Color Related
WhoCanUse
Understand how color contrast can affect different people with visual impairments.
Contrast Ratio
Super easy and quick tool to calculate color contrast ratio using WCAG 2.0.
Color Safe
Beautiful and accessible color palettes based on WCAG Guidelines of contrast ratios.
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.