Colour System Experiment

This experiment explores how to represent the full spectrum of colour. I've got the three primaries and two secondaries (didn't have a purple pastel on me) in their full, pure hues. Then on one side I have a black bar blending into the hues and on the other side a white bar blending. This is sort of like a colour diagram... The hue runs from top to bottom and the tint/shade runs from left to right.