Our cone cells operate like muscles and can get tired, Conway explained. For example, when we look at a red sheet of paper (which has a long wavelength), the long cone works harder than the rest ...

The Brief Scientists say they’ve discovered a new color called "olo," seen only by five people using laser-based retinal stimulation. The color was created by targeting a single type of cone ...

A team of scientists has found a way to unlock a color that doesn't exist in the natural world. Named "olo," this new shade has only been seen by five people so far. It's described as a vivid blue ...

Here's what you need to know. Wavelengths in your eyes There are three types of cone cells in the eye – S, L, and M – each one sensitive to different wavelengths of the colors blue, red and green.