Color Palette Generator - Enter the URL of an image and find its color palette
Site Palette - Get the essential colours from any website
Culrs - A simple, smart approach to choose color palettes
Happy Hues - Curated color palettes in action
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.
Material Palette - Generate and export your Material Design color palette