The factors which make skiwear's colors different the in their degrees of conspicuity were investigated in this study.
　The conspicuity of ten colors were compared.
　Results were as follows.
1. When color targets move slowly, the conspicuity among ten colors hardly differentiated.
2. When target velocity increased, first of all the conspicuity of sky blue color deteriorated, after that, the conspicuity of purplish red color and yellow color deteriorated.
3. The conspicuity of red, green, blue, purple and black color were superior. The conspicuity of yellow-green color and gray were slightly inferior to those colors.
4. The relation was found that the illuminance of superior color in conspicuity is lower than the illuminance of white color (back ground color), and the illuminance of inferior color in conspicuity is higher than that.

DESCENTE SPORTS SCIENCE Vol.10/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE