ΔE 20.4, loose: different enough that you should pick on purpose. Skeleton Horde is more muted, cooler than Pastel Salmon.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Skeleton Horde is more muted, cooler than Pastel Salmon.
The same difference applies the other way round: Pastel Salmon is more saturated, warmer.
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 Pastel Salmon on the colour wheel See Skeleton Horde on the colour wheel
All matches: Pastel Salmon equivalents · Skeleton Horde equivalents