ΔE 10.0, fair: the same colour family, but not a straight swap. JASDF Radome Gray is a little lighter than Gargoyle Grey.
Can I use JASDF Radome Gray instead of Gargoyle Grey?
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). JASDF Radome Gray is a little lighter than Gargoyle Grey.
Can I use Gargoyle Grey instead of JASDF Radome Gray?
The same difference applies the other way round: Gargoyle Grey is a little darker.
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.