The fact that primary colors are naturally very saturated speaks to people. “You can relate that to fashion,” says Yellen.

Yet this collection of essays on the three primary colors — blue, yellow and red — crammed with bits of information you are bound to forget before you've finished the next sentence ...

There are three primary colours: red, green and blue. They can be combined in different ways to make every other colour. The colour of an object is determined by the wavelength of light that it ...