ΔE 10.5, fair: the same colour family, but not a straight swap. Medium German Yellow is cooler than Gelbbraun 8020.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Medium German Yellow is cooler than Gelbbraun 8020.
The same difference applies the other way round: Gelbbraun 8020 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 Gelbbraun 8020 on the colour wheel See Medium German Yellow on the colour wheel
All matches: Gelbbraun 8020 equivalents · Medium German Yellow equivalents