ΔE 13.6, fair: the same colour family, but not a straight swap. Light Blue Green is noticeably lighter, more saturated, cooler than Antiquity Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Light Blue Green is noticeably lighter, more saturated, cooler than Antiquity Green.
The same difference applies the other way round: Antiquity Green is noticeably darker, more muted, 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 Antiquity Green on the colour wheel See Light Blue Green on the colour wheel
All matches: Antiquity Green equivalents · Light Blue Green equivalents