ΔE 12.8, fair: the same colour family, but not a straight swap. Rainy Grey is a little darker, more muted than Celestra Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Rainy Grey is a little darker, more muted than Celestra Grey.
The same difference applies the other way round: Celestra Grey is a little lighter, 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 Celestra Grey on the colour wheel See Rainy Grey on the colour wheel
All matches: Celestra Grey equivalents · Rainy Grey equivalents