ΔE 7.1, close: similar, with a visible difference side by side. Titan Violet Pale is a little darker, more saturated than Matt White Primer. They are different kinds of paint: Army Painter Matt White Primer is a technical paint or medium and Golden Titan Violet Pale is an opaque base/layer 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 7). Titan Violet Pale is a little darker, more saturated than Matt White Primer. They are different kinds of paint.
The same difference applies the other way round: Matt White Primer is a little lighter, 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 Matt White Primer on the colour wheel See Titan Violet Pale on the colour wheel
All matches: Matt White Primer equivalents · Titan Violet Pale equivalents