ΔE 10.5, fair: the same colour family, but not a straight swap. Desert Webbing is cooler than Light Earth.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Desert Webbing is cooler than Light Earth.
The same difference applies the other way round: Light Earth is 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 Earth on the colour wheel See Desert Webbing on the colour wheel
All matches: Light Earth equivalents · Desert Webbing equivalents