ΔE 12.8, fair: the same colour family, but not a straight swap. Sandstorm is a little lighter, warmer than Light Mustard Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Sandstorm is a little lighter, warmer than Light Mustard Khaki.
The same difference applies the other way round: Light Mustard Khaki 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 Light Mustard Khaki on the colour wheel See Sandstorm on the colour wheel
All matches: Light Mustard Khaki equivalents · Sandstorm equivalents