Color Palette Generator - Enter the URL of an image and find its color palette
Material UI Colors - Color palette for material design
Material Palette - Generate and export your Material Design color palette
Materialette - A material design color palette on macOS / Windows / Linux
Klart.io Colors - A data-driven collection of beautiful color palettes 🌈
Color Palette Manager - This nifty app helps you create, manage and share palettes.