ΔE 14.1, fair: the same colour family, but not a straight swap. Parasite Brown is a little darker, more muted than Ochre Desert.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Parasite Brown is a little darker, more muted than Ochre Desert.
The same difference applies the other way round: Ochre Desert is a little lighter, more saturated.
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 Desert on the colour wheel See Parasite Brown on the colour wheel
All matches: Ochre Desert equivalents · Parasite Brown equivalents