ΔE 15.9, loose: different enough that you should pick on purpose. Krieg Khaki is a little darker, more muted, warmer than Stone Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Krieg Khaki is a little darker, more muted, warmer than Stone Green.
The same difference applies the other way round: Stone Green is a little lighter, 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 Stone Green on the colour wheel See Krieg Khaki on the colour wheel
All matches: Stone Green equivalents · Krieg Khaki equivalents