match.color.io - Automatically match colors of any image or movie with ML
Colores - Find color palette ideas via image search
Color Palette Generator - Enter the URL of an image and find its color palette
Mystery Box - Evolution - This is the sequel of Hidden Secrets, where you have to discover awesome artifacts hidden in new mysterious boxes by solving intriguing puzzles.
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.
Alembic ⚗️ - A Sketch plugin to extract a color palette from your images