ΔE 18.0, loose: different enough that you should pick on purpose. Meaty Ochre is noticeably darker, more muted, warmer than Zamesi Desert.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Meaty Ochre is noticeably darker, more muted, warmer than Zamesi Desert.
The same difference applies the other way round: Zamesi Desert is noticeably lighter, more saturated, cooler.
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 Zamesi Desert on the colour wheel See Meaty Ochre on the colour wheel
All matches: Zamesi Desert equivalents · Meaty Ochre equivalents