Highlord Blue vs Storm Blue

How close are they?

ΔE 14.8, fair: the same colour family, but not a straight swap. Storm Blue is noticeably darker, warmer than Highlord Blue.

Can I use Storm Blue instead of Highlord Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Storm Blue is noticeably darker, warmer than Highlord Blue.

Can I use Highlord Blue instead of Storm Blue?

The same difference applies the other way round: Highlord Blue is noticeably lighter, 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.