ΔE 9.3, close: similar, with a visible difference side by side. Olive Brown is more muted than Burnt Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Olive Brown is more muted than Burnt Brown.
The same difference applies the other way round: Burnt Brown is more saturated.
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 Burnt Brown on the colour wheel See Olive Brown on the colour wheel
All matches: Burnt Brown equivalents · Olive Brown equivalents