ΔE 17.8, loose: different enough that you should pick on purpose. Purple Hex is a little darker, much more muted, warmer than Sunset Purple.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Purple Hex is a little darker, much more muted, warmer than Sunset Purple.
The same difference applies the other way round: Sunset Purple is a little lighter, much 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 Sunset Purple on the colour wheel See Purple Hex on the colour wheel
All matches: Sunset Purple equivalents · Purple Hex equivalents