ΔE 9.9, close: similar, with a visible difference side by side. USAF Light Blue is a little lighter, more muted, cooler than The Fang.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). USAF Light Blue is a little lighter, more muted, cooler than The Fang.
The same difference applies the other way round: The Fang is a little darker, 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 The Fang on the colour wheel See USAF Light Blue on the colour wheel
All matches: The Fang equivalents · USAF Light Blue equivalents