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,
Shades of orange right. This shade of orange is unique to the University of Tennessee (UT), defined by the institution as Pantone 151, and is called "UT orange". It is offered for sale by The Home Depot and licensed by the university. According to the university, this shade of orange is derived from the American daisy, which grew in profusion on the oldest part of the campus, The Hill. "Spanish orange" is the color that is called "anaranjado" (the Spanish word for the colour "orange") in the "Guía de coloraciones" ("Guide to colorations") by Rosa Gallego and Juan Carlos Sanz, a color dictionary