Culrs - A simple, smart approach to choose color palettes
Color Palette Generator - Enter the URL of an image and find its color palette
Material @ Colorion - Material design compatible curated color palettes.
Color Hunt - Curated collection of beautiful colors, updated daily
Color Koala - The Koala-ty color palette generator, creating gorgeous colors for all of your side projects.
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!