Lightning Blue vs Andrea Blue

How close are they?

ΔE 13.6, fair: the same colour family, but not a straight swap. Andrea Blue is noticeably darker, more muted than Lightning Blue.

Can I use Andrea Blue instead of Lightning Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Andrea Blue is noticeably darker, more muted than Lightning Blue.

Can I use Lightning Blue instead of Andrea Blue?

The same difference applies the other way round: Lightning Blue is noticeably lighter, more saturated.

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.