Raging Rose vs Naphthol Pink

How close are they?

ΔE 21.5, loose: different enough that you should pick on purpose. Naphthol Pink is a little darker, much more saturated than Raging Rose.

Can I use Naphthol Pink instead of Raging Rose?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Naphthol Pink is a little darker, much more saturated than Raging Rose.

Can I use Raging Rose instead of Naphthol Pink?

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