ΔE 13.8, fair: the same colour family, but not a straight swap. Yellow Ochre is a little lighter, cooler than Raw Sienna.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Yellow Ochre is a little lighter, cooler than Raw Sienna.
The same difference applies the other way round: Raw Sienna is a little darker, warmer.
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 Raw Sienna on the colour wheel See Yellow Ochre on the colour wheel
All matches: Raw Sienna equivalents · Yellow Ochre equivalents