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