Color Palette Generator - Enter the URL of an image and find its color palette
Image Colour Transfer - A free-to-use browser-based application that allows an image to be recoloured to match the colours of another image using novel methods.
Klart.io Colors - A data-driven collection of beautiful color palettes 🌈
Colores - Find color palette ideas via image search
Materialette - A material design color palette on macOS / Windows / Linux
Alembic ⚗️ - A Sketch plugin to extract a color palette from your images