Among the peacock, the toucan, and the macaw, there’s a kaleidoscope of color in the avian family. And then there are the blue birds, the ones that are supposed to bestow happiness wherever they go.

The color has an unshakable hold on musicians, artists and writers. The background color is inspired by International Klein Blue, a hue that the artist Yves Klein first mixed in the 1950s, using ...

Given the overlap between the cones, no wavelength in the world ... the color as blue-green of unprecedented saturation.” The process to discover olo involved first creating a detailed map ...