2 different recipes. Brands sell different pigment mixtures under this name, so they won't all look or mix alike. Compare the pigments below; the most common is PBr24 Chrome Titanate Yellow + PY154 Benzimidazolone Yellow H3G.
Who makes it
PBr24 Chrome Titanate Yellow + PY154 Benzimidazolone Yellow H3G3
- Rembrandt Artists' Oil Colour No. 223PW6 PY154 PBr24LF I OpaqueSeries 2Hue15 ml tube · 40 ml tube · 60 ml tube* · 150 ml tube*About Rembrandt
- PW6 PY154 PBr24LF I OpaqueSeries 1Hue20 ml tube · 40 ml tube · 60 ml tube · 200 ml tube* · 500 ml tin*About Royal Talens
PBr24 Chrome Titanate Yellow2
- Schmincke Mussini Resin-Oil No. 10232
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.