ΔE 6.6, close: similar, with a visible difference side by side. Luftwaffe Uniform is more muted, warmer than Twilight Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Luftwaffe Uniform is more muted, warmer than Twilight Blue.
The same difference applies the other way round: Twilight Blue is more saturated, 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 Twilight Blue on the colour wheel See Luftwaffe Uniform on the colour wheel
All matches: Twilight Blue equivalents · Luftwaffe Uniform equivalents