Nightshade Purple vs Legacy Blue

How close are they?

ΔE 11.4, fair: the same colour family, but not a straight swap. Legacy Blue is a little darker, cooler than Nightshade Purple.

Can I use Legacy Blue instead of Nightshade Purple?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Legacy Blue is a little darker, cooler than Nightshade Purple.

Can I use Nightshade Purple instead of Legacy Blue?

The same difference applies the other way round: Nightshade Purple is a little lighter, 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.