Nishiakawa, M. & Kitaoka, A. (2026). The effects of color temperature and illuminance on the color-dependent Fraser–Wilcox illusion. i-Perception, 17(1). doi.org/10.1177/20416695251412759
For the majority (60%-70%) of observers, the red columns appear to be in front of the blue ones. However, the reversal is observed for the minority (10%-20%) of observers.