ΔE 9.4, close: similar, with a visible difference side by side. Steel Legion Drab is a little lighter, warmer than British Dark Olive Green PFI.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Steel Legion Drab is a little lighter, warmer than British Dark Olive Green PFI.
The same difference applies the other way round: British Dark Olive Green PFI is a little darker, 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 British Dark Olive Green PFI on the colour wheel See Steel Legion Drab on the colour wheel
All matches: British Dark Olive Green PFI equivalents · Steel Legion Drab equivalents