Studio Gouache richly pigmented colors are vivid and intense, with a perfectly even flat wash. The colors are concentrated, lightfast, matt and opaque.The range of Studio Gouache contains a true trichromatic black and a balanced primary system that allows for obtaining mixed shades with particularly low gray rates. The colors have been studied so as to minimize whitening when drying and remain consistent to the shade. Studio Gouache was developed for students and professionals alike and is ideal for making models, studies, decors and illustrations. Conforms to ASTM D-4236.