ΔE 24.6, loose: different enough that you should pick on purpose. Aquamarine is more muted, cooler than Mint Twister.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Aquamarine is more muted, cooler than Mint Twister.
The same difference applies the other way round: Mint Twister 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 Mint Twister on the colour wheel See Aquamarine on the colour wheel
All matches: Mint Twister equivalents · Aquamarine equivalents