ΔE 10.0, fair: the same colour family, but not a straight swap. Dark Purple is a little darker, more saturated than Dark Brown Ochre.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Dark Purple is a little darker, more saturated than Dark Brown Ochre.
The same difference applies the other way round: Dark Brown Ochre 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 Dark Brown Ochre on the colour wheel See Dark Purple on the colour wheel
All matches: Dark Brown Ochre equivalents · Dark Purple equivalents