ΔE 11.5, fair: the same colour family, but not a straight swap. US Desert Arm. is more saturated, warmer than Light Aircraft Gray BS381C 627.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). US Desert Arm. is more saturated, warmer than Light Aircraft Gray BS381C 627.
The same difference applies the other way round: Light Aircraft Gray BS381C 627 is more muted, cooler.
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 Light Aircraft Gray BS381C 627 on the colour wheel See US Desert Arm. on the colour wheel
All matches: Light Aircraft Gray BS381C 627 equivalents · US Desert Arm. equivalents