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