ΔE 6.9, close: similar, with a visible difference side by side. Scarlet Red is a little lighter than Sanguine Scarlet.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Scarlet Red is a little lighter than Sanguine Scarlet.
The same difference applies the other way round: Sanguine Scarlet is a little darker.
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 Scarlet on the colour wheel See Scarlet Red on the colour wheel
All matches: Sanguine Scarlet equivalents · Scarlet Red equivalents