ΔE 9.9, close: similar, with a visible difference side by side. IJA Olive Green is a little lighter, more saturated than Ranger Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). IJA Olive Green is a little lighter, more saturated than Ranger Green.
The same difference applies the other way round: Ranger Green is a little darker, more muted.
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 Ranger Green on the colour wheel See IJA Olive Green on the colour wheel
All matches: Ranger Green equivalents · IJA Olive Green equivalents