ΔE 11.9, fair: the same colour family, but not a straight swap. AMT-7 Greyish Blue is noticeably lighter, cooler than Air Superiority Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). AMT-7 Greyish Blue is noticeably lighter, cooler than Air Superiority Blue.
The same difference applies the other way round: Air Superiority Blue is noticeably darker, warmer.
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 Air Superiority Blue on the colour wheel See AMT-7 Greyish Blue on the colour wheel
All matches: Air Superiority Blue equivalents · AMT-7 Greyish Blue equivalents