ΔE 12.6, fair: the same colour family, but not a straight swap. Dawnstone is more muted than Stonewall Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Dawnstone is more muted than Stonewall Grey.
The same difference applies the other way round: Stonewall Grey is 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 Stonewall Grey on the colour wheel See Dawnstone on the colour wheel
All matches: Stonewall Grey equivalents · Dawnstone equivalents