ΔE 6.4, close: similar, with a visible difference side by side. US Desert Arm. is a little darker, warmer than Warm Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). US Desert Arm. is a little darker, warmer than Warm Grey.
The same difference applies the other way round: Warm Grey is a little lighter, 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 Warm Grey on the colour wheel See US Desert Arm. on the colour wheel
All matches: Warm Grey equivalents · US Desert Arm. equivalents