Abstract
The method of the experiment is to use total of six color, three primary color (R,G,B) and three mixed color (Y,C,M), and to change the purity (increasing and decreasing method) of it to find the difference in the unpleasantness during working through measuring the perception towards the light color.
As a result, like the result in the previous research, the unpleasantness during working increases and the purity of the light color increases, and the fact that there is a range that doesn’t feel unpleasant within the range that color can be perceived. In addition, the evaluation result of the range that color can be perceived including the stimulus range and the evaluation result of the unpleasantness during working are plotted in the CIE 1931 xy chromaticity diagram.