ΔE 8.7, close: similar, with a visible difference side by side. Bog Moss is a little darker, more saturated than Light Soviet Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Bog Moss is a little darker, more saturated than Light Soviet Khaki.
The same difference applies the other way round: Light Soviet Khaki is a little lighter, more muted.
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 Soviet Khaki on the colour wheel See Bog Moss on the colour wheel
All matches: Light Soviet Khaki equivalents · Bog Moss equivalents