ΔE 11.4, fair: the same colour family, but not a straight swap. Dark Sand is a little lighter, more muted, cooler than Iroko.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Dark Sand is a little lighter, more muted, cooler than Iroko.
The same difference applies the other way round: Iroko 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 Iroko on the colour wheel See Dark Sand on the colour wheel
All matches: Iroko equivalents · Dark Sand equivalents