ΔE 10.8, fair: the same colour family, but not a straight swap. Administratum Grey is more muted than WWI German Fokker Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Administratum Grey is more muted than WWI German Fokker Grey.
The same difference applies the other way round: WWI German Fokker Grey 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 WWI German Fokker Grey on the colour wheel See Administratum Grey on the colour wheel
All matches: WWI German Fokker Grey equivalents · Administratum Grey equivalents