The purpose of this research is to compare, according to tone variation of a red jacket, the preference of female college students from Korea and the U.S. for coloration in the traditional Korean dress. The results of the research can be summarized as follows: As to a vivid skirt according to tone variation of red jacket, students of both countries showed the different view in the preference for coloration of vivid red skirt and vivid. dark red jacket, and vivid orange skirt and dull red jacket, and vivid yellow skirt and light dull red jacket, and vivid violet skirt and dull red jacket. As to the light skirt according to tone variation of red jacket, student of both countries showed the different view in the preference for coloration of light red skirt and light red jacket, and light orange skirt and light red jacket. As to the dull skirt according to tone variation of red jacket, student of both countries showed the different view in the preference for coloration of dull red skirt and vivid light dull dark red jacket, and dull yellow skirt and light dull red jacket, and dull yellow skirt and light dull red jacket, and dull green skirt and dull red jacket, and dull violet skirt and vivid light dull dark red jacket. As to the dark skirt according to tone variation of red jacket, student of both countries showed the different view in the preference for coloration of dark red skirt and dull dark red jacket, and dark orange skirt and vivid light dull red jacket, and dark yellow skirt and dull red jacket. As to the neutral skirt according to tone variation of red jacket, student of both countries showed the different view in the preference for coloration of white skirt and vivid red jacket, and dark gray skirt and light red jacket.