ΔE 27.8, loose: different enough that you should pick on purpose. Pale Pink is noticeably lighter, much more muted, warmer than Fey Pink.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 28). Pale Pink is noticeably lighter, much more muted, warmer than Fey Pink.
The same difference applies the other way round: Fey Pink is noticeably darker, much 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 Fey Pink on the colour wheel See Pale Pink on the colour wheel
All matches: Fey Pink equivalents · Pale Pink equivalents