色覚バリアフリーのための色使いの基礎調査(明度差・輝度差が色の弁別性に与える影響)

概要

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We investigated the optimal coloring with regard to the view of colorblindness. We focused on the difference of brightness between two colors and carried out investigations to clarify optimal coloring with participants of the people who have symptoms of the colorblindness. We also made a video camera simulating the view of colorblindness to understand the effects of optimal coloring on discrimination. We clarified that the optimal difference of the brightness for color prints is more than 88/256 and the optimal ratio of the luminance for the information presentation by use of LED is more than 2.8. More than 80% of the people who have symptoms of colorblindness answered that there is no difficulty to distinguish two colors, in the condition satisfying these requirements.