Color Palette Generator - Enter the URL of an image and find its color palette
Colllor - With Colllor it is much easier to generate a consistent color palette with just a few clicks.
Color Hunter - Color Hunter is a place to find and make color palettes created from images.
ColorTag - ColorTag is an API for color detection.
Colormind.io - A color palette generator powered by deep learning.
Palette Ninja - Create harmonious color schemes