ΔE 13.4, fair: the same colour family, but not a straight swap. Quinacridone Burnt Orange is a little darker, more saturated than Ruddy Terra.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Quinacridone Burnt Orange is a little darker, more saturated than Ruddy Terra.
The same difference applies the other way round: Ruddy Terra is a little lighter, more muted.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Ruddy Terra on the colour wheel See Quinacridone Burnt Orange on the colour wheel
All matches: Ruddy Terra equivalents · Quinacridone Burnt Orange equivalents