Recently, the emotional consumption has been a crucial factor in purchasing. The emotional consumption is that the consumer makes a choice heading toward satisfaction of five senses such as sighting, hearing, touching, tasting and smelling in buying auto-vehicles, mobiles, home appliances and so on. Particularly, the color stimulating human eye is significant valuable of its choice. Variation of color of metal alloys was investigated in this study by its morphology without using organic and inorganic surface coatings. We quantitatively analyzed the reflectivity according to the wavelength of Copper alloys. We used copper alloys containing Sn, Zn and alloyed variously to 4%, 14% and 28%, respectively. And the relationship between color gradation of copper alloy and CMYK color chart was suggested in solid solution, intermetallic of Cu-Sn and Cu-Zn alloy in this study.