Material Palette - Generate and export your Material Design color palette
Material @ Colorion - Material design compatible curated color palettes.
Color Palette Generator - Enter the URL of an image and find its color palette
Color Koala - The Koala-ty color palette generator, creating gorgeous colors for all of your side projects.
Color Hunt - Curated collection of beautiful colors, updated daily
Colorion - Curated color palettes with search and tags support