ΔE 9.1, close: similar, with a visible difference side by side. Luftwaffe Uniform is a little darker, more muted than Bluish Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Luftwaffe Uniform is a little darker, more muted than Bluish Grey.
The same difference applies the other way round: Bluish Grey is a little lighter, more saturated.
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 Bluish Grey on the colour wheel See Luftwaffe Uniform on the colour wheel
All matches: Bluish Grey equivalents · Luftwaffe Uniform equivalents