ΔE 10.1, fair: the same colour family, but not a straight swap. English Uniform is more muted, cooler than Gnoll Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). English Uniform is more muted, cooler than Gnoll Brown.
The same difference applies the other way round: Gnoll Brown is more saturated, 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 Gnoll Brown on the colour wheel See English Uniform on the colour wheel
All matches: Gnoll Brown equivalents · English Uniform equivalents