Abstract
Color appearance of afterimages was measured by the elementary color naming. Twenty vivid colored stimuli were presented on a display on a white background one by one and subjects judged the color, which we called the adapting color. After 10 more seconds of gazing the stimulus the subjects judged the color of the afterimage, which we called the adapted color. Apparent hue correspondence of the adapting and adapted colors was similar to the results obtained by the two rooms technique but the chromaticness of the adapted color was 20 to 40 % of the adapting color, which is much smaller than the two rooms technique. The hue correspondence was analyzed both by the opponent colors theory and the complementarity, but not satisfactory.
