ΔE 10.4, fair: the same colour family, but not a straight swap. Light Blue Green is a little darker, warmer than Deep Sky Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Light Blue Green is a little darker, warmer than Deep Sky Blue.
The same difference applies the other way round: Deep Sky Blue is a little lighter, 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 Deep Sky Blue on the colour wheel See Light Blue Green on the colour wheel
All matches: Deep Sky Blue equivalents · Light Blue Green equivalents