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