ΔE 8.0, close: similar, with a visible difference side by side. Ink Magenta is more saturated than Carroburg Crimson. They are different kinds of paint: Citadel Carroburg Crimson is a wash/shade and Vallejo Ink Magenta 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). Ink Magenta is more saturated than Carroburg Crimson. They are different kinds of paint.
The same difference applies the other way round: Carroburg Crimson is 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 Carroburg Crimson on the colour wheel See Ink Magenta on the colour wheel
All matches: Carroburg Crimson equivalents · Ink Magenta equivalents