ΔE 10.2, fair: the same colour family, but not a straight swap. Gorthor Brown is more muted, warmer than British Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Gorthor Brown is more muted, warmer than British Khaki.
The same difference applies the other way round: British Khaki is 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 British Khaki on the colour wheel See Gorthor Brown on the colour wheel
All matches: British Khaki equivalents · Gorthor Brown equivalents