A color tablet is a small, flat piece of material that contains pigment and is used for adding color to a liquid. It can be in the form of a disk or a square and is typically made from compressed wood pulp or other materials mixed with dyes or pigments. When added to water, it dissolves slowly releasing its color into the liquid. Color tablets are commonly used by artists, students, and for various craft projects. They can be purchased in sets of primary colors (red, blue, yellow) as well as a range of other shades and hues.