ΔE 36.8, loose: different enough that you should pick on purpose. Sanctuary Red is a little lighter, much more saturated, warmer than Sanguine Highlight.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 37). Sanctuary Red is a little lighter, much more saturated, warmer than Sanguine Highlight.
The same difference applies the other way round: Sanguine Highlight 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 Sanguine Highlight on the colour wheel See Sanctuary Red on the colour wheel
All matches: Sanguine Highlight equivalents · Sanctuary Red equivalents