2018 年 42 巻 3+ 号 p. 54-
This research aimed to demonstrate the simultaneous color contrast under three devices such as in the two-room, on the display and object. Four color papers of surrounding; red, yellow, green and blue were prepared. Gray patch pasted in the center of color paper. Subject task was to judge the color appearance of the gray patch by elementary color naming method. The result shows high amount of chromaticness of the gray patch in the two-room and display respectively. But the result of object viewing condition showed low amount of chromaticness. In the case of display the amount of chromaticness and hue judgement is similarly because of subject could perceive the color of surrounding as illumination but not color of an object.