ΔE 7.3, close: similar, with a visible difference side by side. Iraqi Sand is more saturated than Australian Camouflage Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Iraqi Sand is more saturated than Australian Camouflage Brown.
The same difference applies the other way round: Australian Camouflage Brown 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 Australian Camouflage Brown on the colour wheel See Iraqi Sand on the colour wheel
All matches: Australian Camouflage Brown equivalents · Iraqi Sand equivalents