Values are different degrees of light and dark which can be measured on a scale from black to white. They provide the tools that are necessary in order to create the illusion of a third dimension. Values allow the artist to achieve a greater sense of volume and depth within a subject.
Learn how to incorporate the principles of Value into your own paintings as Brian explains the following:
The Value Scale
How to accurately recognize and judge values
Establishing a reference point to use as a guide when judging values
Keying a painting higher or lower in value
How Value sets the stage on which Color performs