ΔE 10.3, fair: the same colour family, but not a straight swap. Aquamarine is a little lighter, more saturated than Teal.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Aquamarine is a little lighter, more saturated than Teal.
The same difference applies the other way round: Teal is a little darker, 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 Teal on the colour wheel See Aquamarine on the colour wheel
All matches: Teal equivalents · Aquamarine equivalents