ΔE 9.2, close: similar, with a visible difference side by side. US Desert Arm. is a little darker, cooler than Light Sand FS-33727.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). US Desert Arm. is a little darker, cooler than Light Sand FS-33727.
The same difference applies the other way round: Light Sand FS-33727 is a little lighter, 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 Light Sand FS-33727 on the colour wheel See US Desert Arm. on the colour wheel
All matches: Light Sand FS-33727 equivalents · US Desert Arm. equivalents