ΔE 10.1, fair: the same colour family, but not a straight swap. Dark Ivory is a little lighter, more muted than Stone Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Dark Ivory is a little lighter, more muted than Stone Grey.
The same difference applies the other way round: Stone Grey is a little darker, more saturated.
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 Stone Grey on the colour wheel See Dark Ivory on the colour wheel
All matches: Stone Grey equivalents · Dark Ivory equivalents