Abstract
It is important for engineers using color to acquire skills to understand and to apply three attributes of color, namely hue, chroma and value (brightness). In terms of universally accessible design, brightness is especially important because of its robustness to color-blindness and age-related changes of color sensitivity. In this study we propose a new training method to train brightness discrimination, value-focused training (VT), using HVC color-sense training cards (Japan Color Research Institute). In standard JCRI training (ST), participants put a set of color cards in a same hue plane (blue, red or yellow) in order of chroma and value. In contrast, participants in VT are presented seven cards with different hue, chroma, and value, and seriate them in order of brightness, ignoring other attributes. We conducted color training to eight college students with either ST or VT and assessed the effect of the training methods. Although VT was more difficult to achieve perfectly than ST, the participants in VT tended to discriminate brightness more accurately than those in ST after the training.
