ΔE 7.7, close: similar, with a visible difference side by side. Charred Bone is more saturated, warmer than Medium Olive Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Charred Bone is more saturated, warmer than Medium Olive Green.
The same difference applies the other way round: Medium Olive Green is more muted, 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 Medium Olive Green on the colour wheel See Charred Bone on the colour wheel
All matches: Medium Olive Green equivalents · Charred Bone equivalents