Dark Prussian Blue vs Midnight Purple

How close are they?

ΔE 10.8, fair: the same colour family, but not a straight swap. Midnight Purple is a little lighter, more saturated, warmer than Dark Prussian Blue.

Can I use Midnight Purple instead of Dark Prussian Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Midnight Purple is a little lighter, more saturated, warmer than Dark Prussian Blue.

Can I use Dark Prussian Blue instead of Midnight Purple?

The same difference applies the other way round: Dark Prussian Blue is a little darker, more muted, cooler.

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.