ΔE 15.6, loose: different enough that you should pick on purpose. Light Magenta is a little lighter, much more saturated, warmer than Forbidden Fruit.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Light Magenta is a little lighter, much more saturated, warmer than Forbidden Fruit.
The same difference applies the other way round: Forbidden Fruit is a little darker, much more muted, 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 Forbidden Fruit on the colour wheel See Light Magenta on the colour wheel
All matches: Forbidden Fruit equivalents · Light Magenta equivalents