Greeting Card Colour Spheres

Colour theory diagram (1810) by Philipp Otto Runge. Runge was one of the first colour theorists to incorporate variations in brightness into the colour wheel, creating colour spheres.

Printed on sustainably sourced, acid free, carbon neutral paper.

170mm x 120mm.

Blank inside.

Individually wrapped in a cellophane sleeve, with a 120gsm recycled envelope.