ΔE 13.2, fair: the same colour family, but not a straight swap. Red is noticeably lighter, more saturated, cooler than RAL 8013 Rotbraun.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Red is noticeably lighter, more saturated, cooler than RAL 8013 Rotbraun.
The same difference applies the other way round: RAL 8013 Rotbraun is noticeably darker, more muted, 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 RAL 8013 Rotbraun on the colour wheel See Red on the colour wheel
All matches: RAL 8013 Rotbraun equivalents · Red equivalents