Why does fauvism use these colours?

Fauvism uses bold, vibrant colors to express emotion and create an immediate visual impact, rather than to represent reality accurately. The movement, led by artists like Henri Matisse and André Derain, emphasized the subjective experience of color, believing that it could convey feelings and moods. By employing non-naturalistic colors, Fauvist artists aimed to liberate color from its descriptive role, allowing it to become an essential element of the artwork itself. This approach challenged traditional artistic conventions and focused on the expressive potential of color.