ΔE 10.4, fair: the same colour family, but not a straight swap. Pale Sand is more muted, warmer than Ivory.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Pale Sand is more muted, warmer than Ivory.
The same difference applies the other way round: Ivory is more saturated, 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 Ivory on the colour wheel See Pale Sand on the colour wheel
All matches: Ivory equivalents · Pale Sand equivalents