ΔE 6.8, close: similar, with a visible difference side by side. RLM 80 Olive Green is more saturated, cooler than Venom Wyrm.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). RLM 80 Olive Green is more saturated, cooler than Venom Wyrm.
The same difference applies the other way round: Venom Wyrm is more muted, 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 Venom Wyrm on the colour wheel See RLM 80 Olive Green on the colour wheel
All matches: Venom Wyrm equivalents · RLM 80 Olive Green equivalents