Azure Blue vs Russ Grey

How close are they?

ΔE 10.6, fair: the same colour family, but not a straight swap. Russ Grey is a little darker, more muted, cooler than Azure Blue.

Can I use Russ Grey instead of Azure Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Russ Grey is a little darker, more muted, cooler than Azure Blue.

Can I use Azure Blue instead of Russ Grey?

The same difference applies the other way round: Azure Blue is a little lighter, more saturated, 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.