u/Yose_85

Right now I'm using a CMYK+RGB system with oils (plus white and other aux pigments like violet), but i want to add another primary set RBY with earth tones as auxiliary...

for Blue i think i'll go for Prussian Blue. (in contrast of ultramarine)
for yellow obviously yellow ochre. (in contrast of cadmiun yellow)
my doubt is about the red one in contrast of magenta or cadmiun red...
my options are... Indian Red, venetian red and burnt sienna... what do you think is the best option? Indian is more magenta-ish whereas siena and venetian red are more red-ish. Maybe i could add also olive green...

I do abstract and color field painting and the idea behind is to have a less saturated palette, mixing my basic colors with these auxiliary... (i know i can achieve same result with the basics but i'm aiming for a twist on my workflow to get dirtier colors faster). What do you think about this???

I use georgian oils btw.