Color triangle Color triangle A colour triangle is an arrangement of colours within a triangle, based on the additive combination of three primary colors at its corners. An additive colour space defined by three primary colors has a chromaticity gamut that is a color triangle, when the amounts of the primaries are constrained to be nonnegative. Before the theory of additive color was proposed by Thomas Young and further developed by James Clerk Maxwell and Hermann von Helmholtz, triangles were also used to organize colors, for example around a system of red, yellow, and blue primary colors. After the development of the
Logo of the BBC the boxes' shape, so that it would still be familiar with what people know about the BBC. The typeface used is Gill Sans, made by Eric Gill. It was chosen because, it was elegant, robust and has a timeless appeal: the typeface had been created 60 years before and so avoided the typeface looking outdated at a later date. This typeface also eliminated the disappearing counters issue, as the counters of the Bs were much larger. Appropriately, some of Gill's statues adorn the exterior of Broadcasting House. The logo was also designed so that anything could be added after the