ΔE 8.7, close: similar, with a visible difference side by side. XV-88 is more saturated than RAL 8031 F9 Sandbraun.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). XV-88 is more saturated than RAL 8031 F9 Sandbraun.
The same difference applies the other way round: RAL 8031 F9 Sandbraun is 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 8031 F9 Sandbraun on the colour wheel See XV-88 on the colour wheel
All matches: RAL 8031 F9 Sandbraun equivalents · XV-88 equivalents