ΔE 6.5, close: similar, with a visible difference side by side. US Desert Sand is a little lighter, warmer than Sandstone.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). US Desert Sand is a little lighter, warmer than Sandstone.
The same difference applies the other way round: Sandstone is a little darker, cooler.
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 Sandstone on the colour wheel See US Desert Sand on the colour wheel
All matches: Sandstone equivalents · US Desert Sand equivalents