2 different recipes. Brands sell different pigment mixtures under this name, so they won't all look or mix alike. Compare the pigments below.
Who makes it
PV23 Dioxazine Violet1
- PW6 PV23LF I OpaqueSeries 240 ml tube · 150 ml tube · 300 ml cartridge · 500 ml tin · 1000 ml tin* · 4000 ml tin*About Art Spectrum
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.