Sanguine Scarlet vs Scarlet

How close are they?

ΔE 12.6, fair: the same colour family, but not a straight swap. Scarlet is noticeably lighter, more saturated than Sanguine Scarlet.

Can I use Scarlet instead of Sanguine Scarlet?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Scarlet is noticeably lighter, more saturated than Sanguine Scarlet.

Can I use Sanguine Scarlet instead of Scarlet?

The same difference applies the other way round: Sanguine Scarlet is noticeably darker, more muted.

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.