ΔE 25.5, loose: different enough that you should pick on purpose. Sybarite Green is noticeably darker, more muted, warmer than Mint Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Sybarite Green is noticeably darker, more muted, warmer than Mint Green.
The same difference applies the other way round: Mint Green is noticeably lighter, more saturated, cooler.
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 Green on the colour wheel See Sybarite Green on the colour wheel
All matches: Mint Green equivalents · Sybarite Green equivalents