ΔE 12.7, fair: the same colour family, but not a straight swap. Dirty Grey is a little darker, cooler than Zandri Dust.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Dirty Grey is a little darker, cooler than Zandri Dust.
The same difference applies the other way round: Zandri Dust is a little lighter, 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 Zandri Dust on the colour wheel See Dirty Grey on the colour wheel
All matches: Zandri Dust equivalents · Dirty Grey equivalents