Raging Rose vs Dark Magenta

How close are they?

ΔE 9.6, close: similar, with a visible difference side by side. Dark Magenta is a little darker, cooler than Raging Rose.

Can I use Dark Magenta instead of Raging Rose?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Dark Magenta is a little darker, cooler than Raging Rose.

Can I use Raging Rose instead of Dark Magenta?

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

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.