ΔE 8.3, close: similar, with a visible difference side by side. USAAF Light Gray is a little darker, more saturated than JASDF Radome Gray.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). USAAF Light Gray is a little darker, more saturated than JASDF Radome Gray.
The same difference applies the other way round: JASDF Radome Gray 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 JASDF Radome Gray on the colour wheel See USAAF Light Gray on the colour wheel
All matches: JASDF Radome Gray equivalents · USAAF Light Gray equivalents