Periwinkle Purple vs Storm Blue

How close are they?

ΔE 13.5, fair: the same colour family, but not a straight swap. Storm Blue is noticeably darker, more muted, cooler than Periwinkle Purple.

Can I use Storm Blue instead of Periwinkle Purple?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Storm Blue is noticeably darker, more muted, cooler than Periwinkle Purple.

Can I use Periwinkle Purple instead of Storm Blue?

The same difference applies the other way round: Periwinkle Purple is noticeably 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.