ΔE 21.9, loose: different enough that you should pick on purpose. Aquamarine is more muted, cooler than Magic Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Aquamarine is more muted, cooler than Magic Green.
The same difference applies the other way round: Magic Green is more saturated, 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 Magic Green on the colour wheel See Aquamarine on the colour wheel
All matches: Magic Green equivalents · Aquamarine equivalents