Raging Rose vs Scarlett Red

How close are they?

ΔE 19.0, loose: different enough that you should pick on purpose. Scarlett Red is a little darker, much more saturated, warmer than Raging Rose.

Can I use Scarlett Red instead of Raging Rose?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Scarlett Red is a little darker, much more saturated, warmer than Raging Rose.

Can I use Raging Rose instead of Scarlett Red?

The same difference applies the other way round: Raging Rose is a little lighter, 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.