ΔE 12.8, fair: the same colour family, but not a straight swap. Aircraft Gray is a little darker, more saturated than Shark White.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Aircraft Gray is a little darker, more saturated than Shark White.
The same difference applies the other way round: Shark White 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 Shark White on the colour wheel See Aircraft Gray on the colour wheel
All matches: Shark White equivalents · Aircraft Gray equivalents