ΔE 14.9, fair: the same colour family, but not a straight swap. Hexos Palesun is a little darker, much more saturated than Arid Earth.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Hexos Palesun is a little darker, much more saturated than Arid Earth.
The same difference applies the other way round: Arid Earth is a little lighter, much 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 Arid Earth on the colour wheel See Hexos Palesun on the colour wheel
All matches: Arid Earth equivalents · Hexos Palesun equivalents