ΔE 15.1, loose: different enough that you should pick on purpose. Light Blue Green is a little darker, more muted, cooler than Caribbean Blue.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Light Blue Green is a little darker, more muted, cooler than Caribbean Blue.
The same difference applies the other way round: Caribbean Blue is a little lighter, more saturated, warmer.
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 Caribbean Blue on the colour wheel See Light Blue Green on the colour wheel
All matches: Caribbean Blue equivalents · Light Blue Green equivalents