ΔE 7.7, close: similar, with a visible difference side by side. Dark Green RLM71 is more muted, cooler than Dark Mud.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dark Green RLM71 is more muted, cooler than Dark Mud.
The same difference applies the other way round: Dark Mud is more saturated, 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 Dark Mud on the colour wheel See Dark Green RLM71 on the colour wheel
All matches: Dark Mud equivalents · Dark Green RLM71 equivalents