When purple perceived only at fixation: A fixation- and distance-dependent color illusion

Key Points

• The aim is to explore how color perception changes for purple elements based on fixation point and distance.
• Described an optical illusion involving color perception related to fixation and distance.
• Analyzed the perception of purple color at various distances and fixation points.
• Studied hue shifts in surrounding elements compared to fixated elements.
• Purple elements appear distinctly purple at the point of fixation.
• Surrounding purple elements are perceived more blue depending on fixated distance.
• As viewing distance increases, more purple elements are perceived correctly as purple.