Imagine seeing a color that no one else has ever seen before. A team of scientists claims to have done just that – unveiling a new shade called “olo”, a super- saturated blue-green that exists outside normal human vision. The discovery came after researchers fired laser pulses into their own eyes, triggering a unique visual response.
In the experiment, five participants – including lead researcher Prof. Ren Ng from the University of California – had lasers directed into their retinas, stimulating specific color-sensitive cells (cones) in a way that doesn’t happen naturally. Normally, our eyes blend signals from red, green, and blue cones to create the colors we see. But this time, only the green sensitive (M) cones were activated, producing a color so intense that it doesn’t appear in nature.
Participants described “olo” as more vivid than any real-world color – like seeing pink your whole life, then suddenly encountering a never-before-seen ultra-bright red. To confirm their findings, they matched the new shade using a color-adjustment tool.
While the study, published in Science Advances, is a breakthrough in visual science, some experts remain skeptical. Prof. John Barbur a vision scientist not involved in the research, called it a “technological feat” but questioned whether it truly counts as a new color or just an unusual perception.
So, could this discovery help people with color blindness? The team hopes so. By understanding how cone cells respond to artificial stimulation, they might develop new ways to enhance color vision for those who struggle to distinguish shades.
For now, “olo” remains a lab-born phenomenon- a fleeting glimpse into the unseen spectrum of human vision.
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