Matisse Structure Primary Red is a clean bright red from the center of the red part of the spectrum which is why it is so flexible for mixing the widest possible range of colors. It is made with a quinacridone pigment which in this instance goes under a violet naming convention. This is an accident of history. When this pigment was first developed it was a violet color so it was given the designation PV19 and has gone on to be a hugely successful pigment with uses in many industries. It didn’t take long, however, for chemists to weave their magic and create a slight variation to the quinacridone molecule (chemists call these the beta and gamma forms) which produced a beautiful red color. Paradoxically a closely related quinacridone pigment is called Pigment Red 122 but one of its most familiar uses in artists paint is as a beautiful magenta.
Chemical Description: Quinacridone
Pigment Number: PV19
Lightfastness Rating: ASTM I
Pigment Opacity: Semi-Transparent
Paint Opacity: Semi-Transparent