ΔE 7.6, close: similar, with a visible difference side by side. Gorgon Brown is more muted than Red Oxide.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Gorgon Brown is more muted than Red Oxide.
The same difference applies the other way round: Red Oxide 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 Red Oxide on the colour wheel See Gorgon Brown on the colour wheel
All matches: Red Oxide equivalents · Gorgon Brown equivalents