Temperature refers to the relative warmth or coolness of a hue. Temperature is often overlooked but can be used as a powerful tool in the creation of depth and emotion in a piece. Temperature has also been connected to saturation as desaturated colors are generally seen to be cooler than their purer, more saturated relatives.
Warm colors are generally seen as arousing, active or cheerful. Cool color, on the other hand can be seen as calming, passive and subdued. Warm colors also tend to come forward or feel lighter than their cooler companions which can recede.
Part 1: Using a secondary color create a range, using nine 1.5″x1.5″ squares that show the relative warmth and coolness.
Part 2: Choose a single color that has a clear temperature, blue for cool or red for warm for example. Create a range of nine 1.5″x1.5″ squares that show a change in temperature of that single color from warm to cool while retaining the overall nature of the color i.e. blue should look blue across the scale.