Orange (colour) with green, of yellow with violet ... trying to make the colours intense and not a harmony of grey". In another letter he wrote simply, "there is no orange without blue." Van Gogh, Pierre-Auguste Renoir and many other impressionist and post-impressionist painters frequently placed orange against azure or cobalt blue, to make both colours appear brighter. The actual complement of orange is azure – a colour that is one quarter of the way between blue and green on the colour spectrum. The actual complementary colour of true blue is yellow. Orange pigments are largely in the ochre or cadmium families,
Orange (colour) became King of England in 1689, after the downfall of the Catholic James II. Due to William III, orange became an important political colour in Britain and Europe. William was a Protestant, and as such he defended the Protestant minority of Ireland against the majority Roman Catholic population. As a result, the Protestants of Ireland were known as Orangemen. Orange eventually became one of the colours of the Irish flag, symbolising the Protestant heritage. His rebel flag became the forerunner of The Netherland's modern flag. When the Dutch settlers of South Africa rebelled against the British in the late 19th