ΔE 30.1, loose: different enough that you should pick on purpose. Dragon Blue is noticeably darker, more muted, warmer than Skink Blue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 30). Dragon Blue is noticeably darker, more muted, warmer than Skink Blue.
The same difference applies the other way round: Skink Blue 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 Skink Blue on the colour wheel See Dragon Blue on the colour wheel
All matches: Skink Blue equivalents · Dragon Blue equivalents