ΔE 15.4, loose: different enough that you should pick on purpose. Uniform Green is more muted, cooler than Olive Drab.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Uniform Green is more muted, cooler than Olive Drab.
The same difference applies the other way round: Olive Drab is more saturated, 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 Olive Drab on the colour wheel See Uniform Green on the colour wheel
All matches: Olive Drab equivalents · Uniform Green equivalents