Smoked Blue vs Sombre Grey

How close are they?

ΔE 12.5, fair: the same colour family, but not a straight swap. Sombre Grey is noticeably lighter than Smoked Blue.

Can I use Sombre Grey instead of Smoked Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Sombre Grey is noticeably lighter than Smoked Blue.

Can I use Smoked Blue instead of Sombre Grey?

The same difference applies the other way round: Smoked Blue is noticeably darker.

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.