A group of curious scientists just claimed to have seen a color no human has ever laid eyes on.
And it’s all thanks to a little laser light show… inside their eyeballs.
Dubbed “olo,” this vivid blue-green-ish hue reportedly defies the natural limits of human vision.
“It was jaw-dropping,” said Ren Ng, a UC Berkeley engineer and one of the five lucky participants.
“It’s incredibly saturated.” But don’t go hunting for it in a paint store.
This color only shows up when lasers target a single type of cone cell in your retina—something natural light just can’t do.
What’s The Trick?
Humans see color through three types of cone cells—S, M, and L—each tuned to different wavelengths.
In nature, those cones always work in combos.
But researchers used pinpoint lasers to tickle only the M cones, creating a visual cocktail our brains never normally mix.

Not everyone’s sold. Some experts say it’s just an ultra-pure green, not a whole new color.
Still, the tech—cheekily named “Oz vision”—could unlock new ways to understand color blindness or eye disease.
So, will we all get to glimpse “olo” someday?
Not unless you’re okay with lasers zapping your retina.