Purple vs Magecast Magenta

How close are they?

ΔE 15.7, loose: different enough that you should pick on purpose. Magecast Magenta is a little lighter, much more saturated than Purple.

Can I use Magecast Magenta instead of Purple?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Magecast Magenta is a little lighter, much more saturated than Purple.

Can I use Purple instead of Magecast Magenta?

The same difference applies the other way round: Purple is a little darker, 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.