ΔE 8.4, close: similar, with a visible difference side by side. Mid Soviet Khaki is more muted, warmer than Nº1 Light Green (FS34151).
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Mid Soviet Khaki is more muted, warmer than Nº1 Light Green (FS34151).
The same difference applies the other way round: Nº1 Light Green (FS34151) 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 Nº1 Light Green (FS34151) on the colour wheel See Mid Soviet Khaki on the colour wheel
All matches: Nº1 Light Green (FS34151) equivalents · Mid Soviet Khaki equivalents