ΔE 11.2, fair: the same colour family, but not a straight swap. IJN Gray (Maizuru Arsenal) is a little darker, more saturated than Administratum Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). IJN Gray (Maizuru Arsenal) is a little darker, more saturated than Administratum Grey.
The same difference applies the other way round: Administratum Grey is a little lighter, more muted.
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 Administratum Grey on the colour wheel See IJN Gray (Maizuru Arsenal) on the colour wheel
All matches: Administratum Grey equivalents · IJN Gray (Maizuru Arsenal) equivalents