File:Colorwheel.svg - Wikimedia Commons
Repost) The 24 RGB color wheel!
File:Color Pigment.png - Wikipedia
RGB color model - Wikipedia
HSL and HSV - Wikipedia
PicMonkey Collage What is color theory, Color wheel, Color theory
Newton disc - Wikipedia
Prismatic: Color Wheel by Moses Harris, 1766 Wood Wall Art by
Hair coloring - Wikipedia
Harmony (color) - Wikipedia
File:Boutet color wheel.jpg - Wikipedia
Open-Source Color Picker: Get ColorFish