ΔE 18.9, loose: different enough that you should pick on purpose. Skyrat is noticeably lighter, much more saturated than Night Scales.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Skyrat is noticeably lighter, much more saturated than Night Scales.
The same difference applies the other way round: Night Scales is noticeably darker, much more muted.
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 Night Scales on the colour wheel See Skyrat on the colour wheel
All matches: Night Scales equivalents · Skyrat equivalents