ΔE 14.7, fair: the same colour family, but not a straight swap. Light Blue Green is a little darker, much more saturated than Light Blue (Luftwaffe).
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Light Blue Green is a little darker, much more saturated than Light Blue (Luftwaffe).
The same difference applies the other way round: Light Blue (Luftwaffe) is a little lighter, much more muted.
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 Light Blue (Luftwaffe) on the colour wheel See Light Blue Green on the colour wheel
All matches: Light Blue (Luftwaffe) equivalents · Light Blue Green equivalents