Quartz Skin vs Fair Skin

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Fair Skin is a little darker, warmer than Quartz Skin.

Can I use Fair Skin instead of Quartz Skin?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Fair Skin is a little darker, warmer than Quartz Skin.

Can I use Quartz Skin instead of Fair Skin?

The same difference applies the other way round: Quartz Skin is a little 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.