Georgia State University
Georgia State University: Hyper Physics: Color Vision Concepts
An indexing page from Georgia State University for a variety of other pages associated with color vision. Pages are filled with meaningful graphics and thorough explanations.
Khan Academy
Khan Academy: Color Cube (Practice)
This 6-question quiz/practice focuses on the RBG color cube. We can represent all visible colors on a cube, where red increases along the x axis, green along the y axis and blue along the z.