ΔE 7.6, close: similar, with a visible difference side by side. Brown Rose is more saturated, cooler than Barbarian Brawn.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Brown Rose is more saturated, cooler than Barbarian Brawn.
The same difference applies the other way round: Barbarian Brawn is 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 Barbarian Brawn on the colour wheel See Brown Rose on the colour wheel
All matches: Barbarian Brawn equivalents · Brown Rose equivalents