As a kind of media that can evoke unlimited feelings, color can arouse people's direct and significant sensory response. The use of color in the indoor environment can also significantly affect the perception of space and form. The visual effect caused by color can be reflected in physical properties, such as temperature, weight, distance, size and so on. This is not only the result of different degrees of light absorption and reflection of objects, but also the relationship of illusion formed by the interaction between objects. Color also reflects people's physiological and psychological reactions, which is related to people's life experience, interests and associations caused by color, as well as people's age, literacy, character, nationality and habits.