Magnus the Red vs Magenta

How close are they?

ΔE 10.6, fair: the same colour family, but not a straight swap. Magenta is noticeably darker than Magnus the Red.

Can I use Magenta instead of Magnus the Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Magenta is noticeably darker than Magnus the Red.

Can I use Magnus the Red instead of Magenta?

The same difference applies the other way round: Magnus the Red is noticeably lighter.

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.