Hue, Brightness, and Saturation

The assignment said to do a mathematical composition, so initially I thought of the Golden Ratio which we'd discussed in class earlier. That lead to me to this sketch which I manipulated for my assignment: http://www.openprocessing.org/sketch/10274. I wanted to play with the light source created by the gradient background, so I created a staircase effect and wanted to get the color to go through each set of steps after a delay (this didn't work and I realized that I should probably have used pushMatrix() and popMatrix() maybe but I'm not too clear on how those work). What was interesting to me was the hue because depending on the hue you were at, the light source of the piece changed. 

Hue

When the hue is in the blue range, the white is emphasized...

When the hue is in the blue range, the white is emphasized...

...but with brighter colors it gets washed out.

...but with brighter colors it gets washed out.

Saturation

Saturation gave me a lot of white on white

Saturation gave me a lot of white on white

This kind of ended up being an exercise in contrast

This kind of ended up being an exercise in contrast

Brightness

This had the polar opposite effect of saturation...

This had the polar opposite effect of saturation...

instead of white on white, I got black on black

instead of white on white, I got black on black

So if I ever need to test which greys to use with what colors, I might actually use this to figure out contrast.