ΔE 16.1, loose: different enough that you should pick on purpose. Olive Green RLM80 is a little lighter, cooler than Violet.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Olive Green RLM80 is a little lighter, cooler than Violet.
The same difference applies the other way round: Violet is a little darker, 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 Violet on the colour wheel See Olive Green RLM80 on the colour wheel
All matches: Violet equivalents · Olive Green RLM80 equivalents