ΔE 7.8, close: similar, with a visible difference side by side. Ink Red is more saturated than Resplendent Red. They are different kinds of paint: Army Painter Resplendent Red is an opaque base/layer paint and Vallejo Ink Red 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 Red is more saturated than Resplendent Red. They are different kinds of paint.
The same difference applies the other way round: Resplendent Red 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 Resplendent Red on the colour wheel See Ink Red on the colour wheel
All matches: Resplendent Red equivalents · Ink Red equivalents