Colors and Characters That Reach Your Favorite: Comprehensive Visibility Guide for Support Fans and Boards

To get noticed by your "oshi" at a concert venue, your fan or board needs to "instantly catch their eye." This article delves into human visual physiology (cones, rods, and the Purkinje effect), color engineering, safety vest research, public signage guidelines, and UD font validation. It explains ① the most effective color combinations of fluorescent yellow-green or fluorescent orange with black, ② avoiding NG color combinations that do not consider color vision diversity, ③ design formulas such as character height = distance ÷ 250 for different distances, ④ a comparison of the readability of kanji, hiragana, and Roman letters, and ⑤ DIY production steps, using experimental data and examples. By the end of this article, you'll be able to scientifically design visibility that reaches your oshi even from the 500 level of a dome.