ΔE 9.9, close: similar, with a visible difference side by side. Ogryn Camo is a little lighter, more saturated, cooler than Grey Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Ogryn Camo is a little lighter, more saturated, cooler than Grey Green.
The same difference applies the other way round: Grey Green is a little darker, 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 Grey Green on the colour wheel See Ogryn Camo on the colour wheel
All matches: Grey Green equivalents · Ogryn Camo equivalents