ΔE 12.8, fair: the same colour family, but not a straight swap. Zamesi Desert is a little lighter, cooler than Ochre.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Zamesi Desert is a little lighter, cooler than Ochre.
The same difference applies the other way round: Ochre 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 Ochre on the colour wheel See Zamesi Desert on the colour wheel
All matches: Ochre equivalents · Zamesi Desert equivalents