ΔE 7.8, close: similar, with a visible difference side by side. Dioxazine Violet is more saturated than Ironclad Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dioxazine Violet is more saturated than Ironclad Grey.
The same difference applies the other way round: Ironclad Grey 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 Ironclad Grey on the colour wheel See Dioxazine Violet on the colour wheel
All matches: Ironclad Grey equivalents · Dioxazine Violet equivalents