ΔE 10.5, fair: the same colour family, but not a straight swap. Space Dust is a little lighter, cooler than Gelbbraun 8020.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Space Dust is a little lighter, cooler than Gelbbraun 8020.
The same difference applies the other way round: Gelbbraun 8020 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.
See Gelbbraun 8020 on the colour wheel See Space Dust on the colour wheel
All matches: Gelbbraun 8020 equivalents · Space Dust equivalents