The color wheel as we know it today looked very different, cave paintings were made up of reds, blacks, browns, and ochres, Michel Pastoureau, a French professor, explains in his book, Blue: The ...

Should you decorate with navy blue, indigo, cobalt, or Prussian? I took a look back at its history, speaking with art, design, and color experts to find out. Here's what I learned. There are many ...

When the color to be examined is a mixed one, for example, logwood-blue, with prussian blue or indigo, the color of the logwood is first destroyed by dilute acid, the stuff washed and treated with ...

ALTHOUGH prussian blue has been known since 1704, and has long been an important pigment, its chemistry has never been satisfactorily explained. The whole subject is surprisingly confused in spite ...