ΔE 6.9, close: similar, with a visible difference side by side. Black Green RLM70 is more muted than Dark Feldgrau.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Black Green RLM70 is more muted than Dark Feldgrau.
The same difference applies the other way round: Dark Feldgrau 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 Dark Feldgrau on the colour wheel See Black Green RLM70 on the colour wheel
All matches: Dark Feldgrau equivalents · Black Green RLM70 equivalents