Think about the colors of the world around you—the blue of a cloudless sky, the green of a new leaf, the blazing red of a tulip’s petals. We see these colors because of the way our eyes work. But what ...

The color “olo” can’t be found on a Pantone color chart. It can be experienced only in a cramped 9-by-13 room in Northern California. That small space, in a lab on the UC Berkeley campus, contains a ...

Is your green my green? Probably not. What appears as pure green to me is likely to look a bit yellowish or bluish to you. This is because visual systems vary from person to person. Moreover, an ...