In medieval religious painting, blue was most expensive pigment, reserved for the robes of the Virgin Mary. For the Impressionists, it was the colour of light and atmosphere, and in Picasso's hands it became melancholy. This sumptuous book explores the story of blue, with an essay that traces its shifting meanings from ancient history to present day and a gallery section showcasing the colour in all its forms and shades. A beautiful gift for art lovers, designers and anyone who wants to understand how their favourite colour came to be.