ΔE 9.8, close: similar, with a visible difference side by side. Dark Imperial Khaki is cooler than RLM 02 RLM-Grau (1941).
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Dark Imperial Khaki is cooler than RLM 02 RLM-Grau (1941).
The same difference applies the other way round: RLM 02 RLM-Grau (1941) is 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 RLM 02 RLM-Grau (1941) on the colour wheel See Dark Imperial Khaki on the colour wheel
All matches: RLM 02 RLM-Grau (1941) equivalents · Dark Imperial Khaki equivalents