A project by US artist Tauba Auerbach catalogues every colour you can imagine.
The RGB Colorspace Atlas is a 20.3x20.3x20.3-centimetre cube of every single colour imaginable. Hard bound in cloth, and digital offset printed on paper, it's an object to marvel over.
The book and binding were co-designed by Daniel E Kelm and Auerbach, and bound by Kelm with assistance from Leah Hughes.
It seems mind boggling to us that all of the colours that we can see can be contained in such a small object.