ΔE 7.6, close: similar, with a visible difference side by side. Inktense Violet is a little darker than Magecast Magenta. They are different kinds of paint: Army Painter Magecast Magenta is an opaque base/layer paint and Scale75 Inktense Violet is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Inktense Violet is a little darker than Magecast Magenta. They are different kinds of paint.
The same difference applies the other way round: Magecast Magenta is a little 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.
See Magecast Magenta on the colour wheel See Inktense Violet on the colour wheel
All matches: Magecast Magenta equivalents · Inktense Violet equivalents