Dark Blue Black vs Wagram Blue

How close are they?

ΔE 14.2, fair: the same colour family, but not a straight swap. Wagram Blue is noticeably lighter, cooler than Dark Blue Black.

Can I use Wagram Blue instead of Dark Blue Black?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Wagram Blue is noticeably lighter, cooler than Dark Blue Black.

Can I use Dark Blue Black instead of Wagram Blue?

The same difference applies the other way round: Dark Blue Black is noticeably 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.