Pastels colors belong to a pale family of colors, having high value and low to intermediate saturation. Pastels are available in several types. hard, soft, oil, panpastels and pastels pencils. Soft pastels the most commmonly used pastel are made with combination of white chalk, pigment and gum arabic. oil pastels are basically cylindrical sticks of pigment, but they are bound with wax and oil, not gum.