ΔE 9.1, close: similar, with a visible difference side by side. Celestine Skin is a little darker, warmer than Fair Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Celestine Skin is a little darker, warmer than Fair Skin.
The same difference applies the other way round: Fair 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.
See Fair Skin on the colour wheel See Celestine Skin on the colour wheel
All matches: Fair Skin equivalents · Celestine Skin equivalents