The value scale is a basic exercise used to familiarize painters with colors, tints/shades, and brushes. Various values are used not only in paintings, but in sketches, photography, cartoon art, etc. According to Robertson, "when speaking of color
value, we mean it's gradation from dark to light and everything in between" (Robertson 17). But how do you achieve a gradation by only using paint, brushes, and water?
To begin, dip one-third of the bristles of a flat, round brush into clean water. Dip the brush into your first color tray until an eighth of the bristles are coated in color. Create a two-inch stroke on clean watercolor paper. This is the hue, the purest color you can achieve.
Wash the brush and dab it until dry. Then place your brush in the middle of the stroke you just created, and drag the color out another two inches. This is your middle value.
Wash the brush and dab it until dry. Place your brush in the middle of your middle value and drag the color out another two inches. This is your lightest value (Robertson 18).
Here's my completed value chart of warm colors. I mistakenly added more water to the red value and created what's called a back run. Notice the gradation of the red is not as smooth because of the back run.

Next, I created gradations for the cool colors in my palette.

I found the value scale very useful because it taught me the ratios of water to paint that I could use to create different values.
What do you think are some reasons why using various values would be important while painting?
Robertson, Jeanette.
Watercolor 101: Techniques for the Absolute Beginner. New York: Sterling Pub., 2007. Print.