Adapted from colour theory diagrams by chemist and Nobel laureate, Wilhelm Ostwald (1916). Ostwald introduced grey-scale value or brightness into colour theory, influencing Piet Mondrian and the De Stijl movement.
Printed on sustainably sourced, acid free, carbon neutral paper.
170mm x 120mm.
Blank inside.
Individually wrapped in a compostable bag, with a 120gsm recycled envelope.