Abstract: Following the color harmonization theory and combining the NCD perceptual color system to provide a more scientific evaluation method for the color matching design of the product will more effectively enhance the aesthetic of the product. The application and analysis of product color matching based on the Moon & Spencer color harmony principle and the Birkhoff aesthetic evaluation model method combine to the NCD color psychological feelings. In harmonic theory, different intervals and harmonic relationships of hue, value, and chroma will have different effects on aesthetic values. But in perceptual research, regardless of the aesthetic value, the color scheme has a different style impression. Under the harmonization theory, most of the existing color matching aesthetic values of products are greater than 0.5. The most optimal harmonic effect brought by hue difference is same color harmony area. The worst one is second ambiguous area. The best effect of brightness chroma difference is the contrast and harmonization area, the worst is the same tone area, in the product color matching to improve the contrast of two colors gloss will increase its aesthetic value. At the same time, the perceptual color system NCD is used to combine psychological feelings to summarize the style of product color and derive its color scheme. The above methods provide the necessary theoretical basis and evaluation for the future color matching of appliances, so as to improve the aesthetic and harmony of product color matching.

Key words: Aesthetic measure, Color matching design, Moon & Spencer color harmony, NCD system, Style