ΔE 6.4, close: similar, with a visible difference side by side. Pale Flesh is a little darker than Celestine Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Pale Flesh is a little darker than Celestine Skin.
The same difference applies the other way round: Celestine Skin is a little lighter.
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 Celestine Skin on the colour wheel See Pale Flesh on the colour wheel
All matches: Celestine Skin equivalents · Pale Flesh equivalents