ΔE 7.4, close: similar, with a visible difference side by side. Light Feldgrau is a little lighter, cooler than Faded Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Light Feldgrau is a little lighter, cooler than Faded Green.
The same difference applies the other way round: Faded Green is a little darker, 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 Faded Green on the colour wheel See Light Feldgrau on the colour wheel
All matches: Faded Green equivalents · Light Feldgrau equivalents