ΔE 6.8, close: similar, with a visible difference side by side. Celestine Skin is more muted, warmer than Weathered Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Celestine Skin is more muted, warmer than Weathered Skin.
The same difference applies the other way round: Weathered Skin is more saturated, 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 Weathered Skin on the colour wheel See Celestine Skin on the colour wheel
All matches: Weathered Skin equivalents · Celestine Skin equivalents