Using an experimental technique called "Oz," researchers stimulated the human retina such that people saw a brand-new color.

Researchers behind a recent study claim to have discovered a new color that the natural, naked eye cannot perceive — 'olo,' a hyper-saturated blue-green that occurs when a single kind of cone cell is stimulated in the retina.

Researchers from the University of California, Berkeley have announced the discovery of a color never before seen by the human eye. Through a new study, published in Science Advances, researchers used a pulsing laser on study participants to stimulate a part of the eye.