Frost Blue vs Light Ghost Gray

How close are they?

ΔE 13.0, fair: the same colour family, but not a straight swap. Light Ghost Gray is noticeably darker, cooler than Frost Blue.

Can I use Light Ghost Gray instead of Frost Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Light Ghost Gray is noticeably darker, cooler than Frost Blue.

Can I use Frost Blue instead of Light Ghost Gray?

The same difference applies the other way round: Frost Blue is noticeably 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.