ΔE 15.4, loose: different enough that you should pick on purpose. Splinter Green is a little darker, warmer than Green Oxide.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Splinter Green is a little darker, warmer than Green Oxide.
The same difference applies the other way round: Green Oxide is a little lighter, 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 Green Oxide on the colour wheel See Splinter Green on the colour wheel
All matches: Green Oxide equivalents · Splinter Green equivalents