In the process of preparing gouache blueberry color, add some trace and black with positive blue color, so that a deep black with high saturation will appear, and add a little purple to make the color close to blueberry color.

Gouache is the abbreviation of gouache pigment, which belongs to a special watercolor. Refers to the low-priced opaque watercolor pigment. As an introductory painting material for beginners to learn color painting, the usage simulates oil painting techniques or watercolor techniques.