ΔE 27.0, loose: different enough that you should pick on purpose. Skulker Yellow is noticeably darker, more muted, warmer than Daemonic Yellow.
✓ Two Thin Coats comparison chart lists these two as equivalents.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Skulker Yellow is noticeably darker, more muted, warmer than Daemonic Yellow.
The same difference applies the other way round: Daemonic Yellow is noticeably lighter, 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 Daemonic Yellow on the colour wheel See Skulker Yellow on the colour wheel
All matches: Daemonic Yellow equivalents · Skulker Yellow equivalents