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.
Primary Blue is a bright blue gouache colour. It is one of the basic primary colours. It is an opaque colour based on the intense blue phthalocyanine pigment.
Red Ochre is one of the oldest pigments used by man. Originally made from natural iron oxides found in the earth, it is an opaque brownish red pigment. It was often used in Michelangelo's drawings.
