ΔE 8.0, close: similar, with a visible difference side by side. Oxide Brown Dark is a little lighter, more saturated than Oak Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Oxide Brown Dark is a little lighter, more saturated than Oak Brown.
The same difference applies the other way round: Oak Brown is a little darker, more muted.
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 Oak Brown on the colour wheel See Oxide Brown Dark on the colour wheel
All matches: Oak Brown equivalents · Oxide Brown Dark equivalents