ΔE 10.9, fair: the same colour family, but not a straight swap. USAAF Light Gray is a little darker, more muted, cooler than Bare Bone.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). USAAF Light Gray is a little darker, more muted, cooler than Bare Bone.
The same difference applies the other way round: Bare Bone is a little lighter, more saturated, 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 Bare Bone on the colour wheel See USAAF Light Gray on the colour wheel
All matches: Bare Bone equivalents · USAAF Light Gray equivalents