Linia - You will never look at colors the same way...
match.color.io - Automatically match colors of any image or movie with ML
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.
Color Palette Generator - Enter the URL of an image and find its color palette
Quick10 - A fun and entertaining arcade game
Impalette - Scan images for dominant pantone colors