ΔE 17.4, loose: different enough that you should pick on purpose. Desert Brown is much more saturated, cooler than Bestigor Flesh.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Desert Brown is much more saturated, cooler than Bestigor Flesh.
The same difference applies the other way round: Bestigor Flesh is much more muted, 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 Bestigor Flesh on the colour wheel See Desert Brown on the colour wheel
All matches: Bestigor Flesh equivalents · Desert Brown equivalents