ΔE 7.4, close: similar, with a visible difference side by side. Red is a little lighter, more saturated than Magenta.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Red is a little lighter, more saturated than Magenta.
The same difference applies the other way round: Magenta is a little darker, 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.
See Magenta on the colour wheel See Red on the colour wheel
All matches: Magenta equivalents · Red equivalents