Art Spectrum® Spectrum Orange is a rich, deep, orange with lovely warmth produced as an economic alternative to the traditional cadmium orange. It is based on the powerful reddish Pyrazolone orange and cooled with a touch of the ever so slightly greenish Arylide yellow. Both are relatively modern pigments, developed in the 19th century.

ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.