Author: Hinnerk Schulz-Hildebrandt

Country: USA

Description: This illusion reveals a surprising property of color perception: when purple elements are shown on a bluish background, only the element you directly look at appears purple—while all others shift toward blue. As you move your gaze, the purple “spotlight” follows your eyes, and with increasing viewing distance, more and more elements gradually turn purple again. The effect is robust, and easily reproducible on a digital screen.