Colorful Turtles Altered by Background Color

This is an exercise with both brush strokes placing small pieces of paint and bright colors.

Bright Turtles/ oil on gesso bored/ 5 x 7/ Low Country

Here is the same painting with the background altered. The turtles were not touched. This demonstrates how colors affect each other. In the revised painting, the same reds read lighter and brighter by putting them against the yellow green instead of the cobalt blue and turquoise.