When a pattern drawn only in black and white is rotated, people sometimes perceive colors that are not actually present. This phenomenon, known as "subjective color," has been studied for ...

Biologists and linguists alike have long puzzled over the universal human tendency to see and name colors as a combination of four "pure" hues—red, yellow, green and blue. Most people and most ...

A new discovery has unraveled why we sometimes see colors that aren't there. The phenomenon of "color afterimages" is when you see illusory—or false—colors after staring at real colors for a longer ...