Dioxazine Purple vs Ink Violet

How close are they?

ΔE 6.6, close: similar, with a visible difference side by side. Ink Violet is more muted than Dioxazine Purple.

Can I use Ink Violet instead of Dioxazine Purple?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Ink Violet is more muted than Dioxazine Purple.

Can I use Dioxazine Purple instead of Ink Violet?

The same difference applies the other way round: Dioxazine Purple is more saturated.

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.