ΔE 9.5, close: similar, with a visible difference side by side. Traitor Red is more muted, warmer than Dark Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Traitor Red is more muted, warmer than Dark Brown.
The same difference applies the other way round: Dark Brown 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 Dark Brown on the colour wheel See Traitor Red on the colour wheel
All matches: Dark Brown equivalents · Traitor Red equivalents