ΔE 6.7, close: similar, with a visible difference side by side. German Uniform is more muted, warmer than J.A. Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). German Uniform is more muted, warmer than J.A. Green.
The same difference applies the other way round: J.A. Green 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 J.A. Green on the colour wheel See German Uniform on the colour wheel
All matches: J.A. Green equivalents · German Uniform equivalents