ΔE 9.3, close: similar, with a visible difference side by side. Zandri Dust is a little darker, more saturated than RAL 1039 F9 Sandbeige.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Zandri Dust is a little darker, more saturated than RAL 1039 F9 Sandbeige.
The same difference applies the other way round: RAL 1039 F9 Sandbeige is a little lighter, more muted.
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 1039 F9 Sandbeige on the colour wheel See Zandri Dust on the colour wheel
All matches: RAL 1039 F9 Sandbeige equivalents · Zandri Dust equivalents