Intermediate Blue vs Ash Grey

How close are they?

ΔE 11.0, fair: the same colour family, but not a straight swap. Ash Grey is a little darker, more muted than Intermediate Blue.

Can I use Ash Grey instead of Intermediate Blue?

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

Can I use Intermediate Blue instead of Ash Grey?

The same difference applies the other way round: Intermediate Blue 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.