ΔE 6.7, close: similar, with a visible difference side by side. Red Leather is a little lighter, more muted than Oxide Brown Light.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Red Leather is a little lighter, more muted than Oxide Brown Light.
The same difference applies the other way round: Oxide Brown Light is a little darker, 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 Oxide Brown Light on the colour wheel See Red Leather on the colour wheel
All matches: Oxide Brown Light equivalents · Red Leather equivalents