ΔE 6.8, close: similar, with a visible difference side by side. Ochre is a little darker, more muted than RAL 7008 Graugrün.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Ochre is a little darker, more muted than RAL 7008 Graugrün.
The same difference applies the other way round: RAL 7008 Graugrün 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 RAL 7008 Graugrün on the colour wheel See Ochre on the colour wheel
All matches: RAL 7008 Graugrün equivalents · Ochre equivalents