ΔE 36.4, loose: different enough that you should pick on purpose. Cardinal Purple is noticeably darker, much more saturated, cooler than Seraphim Flesh.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 36). Cardinal Purple is noticeably darker, much more saturated, cooler than Seraphim Flesh.
The same difference applies the other way round: Seraphim Flesh is noticeably lighter, much more muted, 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 Seraphim Flesh on the colour wheel See Cardinal Purple on the colour wheel
All matches: Seraphim Flesh equivalents · Cardinal Purple equivalents