ΔE 27.0, loose: different enough that you should pick on purpose. Skull Linen is noticeably darker, much more muted than Pastel Lavender.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Skull Linen is noticeably darker, much more muted than Pastel Lavender.
The same difference applies the other way round: Pastel Lavender is noticeably lighter, much more saturated.
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 Lavender on the colour wheel See Skull Linen on the colour wheel
All matches: Pastel Lavender equivalents · Skull Linen equivalents