ΔE 20.2, loose: different enough that you should pick on purpose. Light Blue is noticeably lighter, warmer than Skink Blue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Light Blue is noticeably lighter, warmer than Skink Blue.
The same difference applies the other way round: Skink Blue is noticeably darker, 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 Skink Blue on the colour wheel See Light Blue on the colour wheel
All matches: Skink Blue equivalents · Light Blue equivalents