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
PY74 Arylide Yellow 5GX1
- Williamsburg Handmade Oil Colors No. 6000202PW6 PY74LF I OpaqueSeries 237 ml tube · 150 ml tube · 8 fl oz can* · 16 fl oz can*About Williamsburg
Pigments unconfirmed1
- Pigments unconfirmedLF – Opaque40 ml tube · 175 ml tube · 16 fl oz can* · 128 fl oz can*About Vasari
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.