Who Can Use - WhoCanUse is a tool that brings attention and understanding to how color contrast can affect different people with visual impairments.
Color Palette Generator - Enter the URL of an image and find its color palette
Colour Contrast Analyser - TPGi's ADA Color Contrast Checker checks for helps determine the accessibility the contrast ratio of two colors for WCAG AA and AAA.
Color Hunt - Curated collection of beautiful colors, updated daily
Palette For Mac - A menu bar based colour contrast analyser
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!