How scientists created 'Olo,' a color that doesn't exist in nature

"Olo" does not exist in nature, nor can it be found among paint cans. But for a very select few, olo can be seen — through the intervention of careful computing and lasers. A team led by vision scientist Austin Roorda and computer scientist Ren Ng at UC Berkeley figured out a method for stimulating only one specific subset of cones of the retina. It's the only way to view this spectacular teal. Creating the color is helping push the boundaries of vision science.Follow Short Wave on Spotify, and Apple Podcasts.More questions about the science behind our everyday lives? Email us at shortwave@npr.org.

Jun 6, 2025 - 08:12
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How scientists created 'Olo,' a color that doesn't exist in nature
Researcher Hannah Doyle calibrates the AOSLO system prior to an Oz Vision experiment.

"Olo" does not exist in nature, nor can it be found among paint cans. But for a very select few, olo can be seen — through the intervention of careful computing and lasers. A team led by vision scientist Austin Roorda and computer scientist Ren Ng at UC Berkeley figured out a method for stimulating only one specific subset of cones of the retina. It's the only way to view this spectacular teal. Creating the color is helping push the boundaries of vision science.

Follow Short Wave on Spotify, and Apple Podcasts.

More questions about the science behind our everyday lives? Email us at shortwave@npr.org.