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
PO20 Cadmium Orange + PY35 Cadmium Yellow1
- Williamsburg Handmade Oil Colors No. 6000416PY35 PO20LF I OpaqueSeries 637 ml tube · 150 ml tube · 8 fl oz can* · 16 fl oz can*About Williamsburg
PR108 Cadmium Red1
- Old Holland Classic Oil Colours No. E139PR108LF ISeries E18 ml tube* · 40 ml tube · 60 ml tube* · 125 ml tube · 225 ml tube · 475 ml tin* · 1000 ml tin*About Old Holland
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.