Lemon Yellow is a clear bright yellow colour. It is part of the Hansa pigments which were discovered in the early 1900s in Germany by the Hoechst company.
Primary Yellow is a bright yellow gouache colour. It is one of the basic primary colours. It is based on the high tinting strength Quinophthalone yellow pigment.
Yellow Ochre is a warm yellow colour. Originally made from natural iron oxides found in earth, it is one of the oldest pigments used by mankind. A synthetic version became available in the 1920s.
