ΔE 28.7, loose: different enough that you should pick on purpose. Titan Violet Pale is noticeably lighter, much more muted than Princess Pink. They are different kinds of paint: Army Painter Princess Pink is a one-coat contrast-style paint and Golden Titan Violet Pale is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 29). Titan Violet Pale is noticeably lighter, much more muted than Princess Pink. They are different kinds of paint.
The same difference applies the other way round: Princess Pink is noticeably darker, much 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.
See Princess Pink on the colour wheel See Titan Violet Pale on the colour wheel
All matches: Princess Pink equivalents · Titan Violet Pale equivalents