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