ΔE 6.3, close: similar, with a visible difference side by side. Dark Skin is more saturated, cooler than Oak Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Dark Skin is more saturated, cooler than Oak Brown.
The same difference applies the other way round: Oak Brown 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 Oak Brown on the colour wheel See Dark Skin on the colour wheel
All matches: Oak Brown equivalents · Dark Skin equivalents