ΔE 10.7, fair: the same colour family, but not a straight swap. Skeleton Bone is a little lighter, more muted, cooler than Dark Sand.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Skeleton Bone is a little lighter, more muted, cooler than Dark Sand.
The same difference applies the other way round: Dark Sand is a little darker, more saturated, 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 Dark Sand on the colour wheel See Skeleton Bone on the colour wheel
All matches: Dark Sand equivalents · Skeleton Bone equivalents