ΔE 9.1, close: similar, with a visible difference side by side. RLM 83 Dark Green is a little darker than Medieval Forest.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). RLM 83 Dark Green is a little darker than Medieval Forest.
The same difference applies the other way round: Medieval Forest is a little lighter.
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 Medieval Forest on the colour wheel See RLM 83 Dark Green on the colour wheel
All matches: Medieval Forest equivalents · RLM 83 Dark Green equivalents