Biography of Johannes Itten: He was born in Switserland in the city: Sudern-Linden on the 11th of November in 1888 and he died on the 27th of May in 1967. He died when he was 78 years old. In his life he studied at the Bern-Hofwil Acedemy where he learned to be a good painter. Later he was a master at the school: Bauhaus, there he learned students to paint very well.
Colour Theory of Johannes Itten: Johannes Itten invented a colour theory called the colour wheel. The colour wheel was a wheel with all colours in it. The primary colours (yellow, blue and red) where in the middle in a kind of triangle (see picture). The secondary colours (orange, green and purple) were around the primary colours in a kind of triangles but than the triangles have longer sides. (see picture) and around the primary and secondary colours are the tertiary colours (Yellowish-green, yellowish-orange, redish-orange, redish-purple, bluish-green and bluish-purple) than you have the colour wheel.
Here is a picture of a colour wheel:
