Olivgrün (RLM 71) vs Refractive Green

How close are they?

ΔE 8.0, close: similar, with a visible difference side by side. Refractive Green is a little lighter, more muted than Olivgrün (RLM 71).

Can I use Refractive Green instead of Olivgrün (RLM 71)?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Refractive Green is a little lighter, more muted than Olivgrün (RLM 71).

Can I use Olivgrün (RLM 71) instead of Refractive Green?

The same difference applies the other way round: Olivgrün (RLM 71) is a little darker, more saturated.

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.