match.color.io - Automatically match colors of any image or movie with ML
Color Palette Generator - Enter the URL of an image and find its color palette
Klart.io Colors - A data-driven collection of beautiful color palettes 🌈
Colores - Find color palette ideas via image search
Palette For Mac - A menu bar based colour contrast analyser
Alembic ⚗️ - A Sketch plugin to extract a color palette from your images