RLM 79 (1942) vs Telogreika Ochre

How close are they?

ΔE 9.1, close: similar, with a visible difference side by side. Telogreika Ochre is a little lighter, cooler than RLM 79 (1942).

Can I use Telogreika Ochre instead of RLM 79 (1942)?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Telogreika Ochre is a little lighter, cooler than RLM 79 (1942).

Can I use RLM 79 (1942) instead of Telogreika Ochre?

The same difference applies the other way round: RLM 79 (1942) is a little darker, 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.