ΔE 12.0, fair: the same colour family, but not a straight swap. Grey Blue is a little lighter, cooler than Tornado Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Grey Blue is a little lighter, cooler than Tornado Grey.
The same difference applies the other way round: Tornado Grey is a little darker, 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 Tornado Grey on the colour wheel See Grey Blue on the colour wheel
All matches: Tornado Grey equivalents · Grey Blue equivalents