ΔE 16.9, loose: different enough that you should pick on purpose. Light Green Blue is a little lighter, much more muted, warmer than Morning Sky.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Green Blue is a little lighter, much more muted, warmer than Morning Sky.
The same difference applies the other way round: Morning Sky is a little darker, much 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 Morning Sky on the colour wheel See Light Green Blue on the colour wheel
All matches: Morning Sky equivalents · Light Green Blue equivalents