ΔE 7.0, close: similar, with a visible difference side by side. Burnt Umber is more muted than RAL 8017 Rotbraun.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Burnt Umber is more muted than RAL 8017 Rotbraun.
The same difference applies the other way round: RAL 8017 Rotbraun is 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.
See RAL 8017 Rotbraun on the colour wheel See Burnt Umber on the colour wheel
All matches: RAL 8017 Rotbraun equivalents · Burnt Umber equivalents