ΔE 12.4, fair: the same colour family, but not a straight swap. Grey RLM02 is noticeably lighter, warmer than Mid Feldgrau.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Grey RLM02 is noticeably lighter, warmer than Mid Feldgrau.
The same difference applies the other way round: Mid Feldgrau is noticeably darker, cooler.
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 Mid Feldgrau on the colour wheel See Grey RLM02 on the colour wheel
All matches: Mid Feldgrau equivalents · Grey RLM02 equivalents