the top wheel isn't correct, but the bottom wheels are cool
It’s not easy choosing colours when you’re designing. One of most complicated elements is finding colours that work well together.
This guide provides tips on what colours to use in your art work and designs.
Vintage Colour Wheel featured on Bambino Goodies
Prismacolor Color Wheel - WetCanvas
A better explanation than I've ever gotten from a teacher or book. This could be the wiki for color theory: Why do some color schemes work, and others don’t?
Colour theory sketchbook page
Colours Theory can set a mood, attract attention or make a statement. You can create elegance, warmth, feeling and emotion with different Colour Schemes.
The Color Wheel by Bridget Beth Collins
colour wheel collage