(Schulz-Hildebrandt, 2025) When Purple Perceived Only at Fixation: A Fixation and Distance-Dependent Color Illusion

10.48550/arXiv.2509.11582

In this paper a novel optical illusion is described in which purple structures are perceived as purple at the point of fixation, while the surrounding structures of the same purple color are perceived toward a blue hue. As the viewing distance increases, a greater number of purple structures revert to a purple appearance.