ΔE 20.4, loose: different enough that you should pick on purpose. Cobalt Violet Hue is noticeably darker, warmer than Moonlake Coral. They are different kinds of paint: Army Painter Moonlake Coral is a one-coat contrast-style paint and Golden Cobalt Violet Hue is an opaque base/layer 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 20). Cobalt Violet Hue is noticeably darker, warmer than Moonlake Coral. They are different kinds of paint.
The same difference applies the other way round: Moonlake Coral is noticeably lighter, cooler.
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 Moonlake Coral on the colour wheel See Cobalt Violet Hue on the colour wheel
All matches: Moonlake Coral equivalents · Cobalt Violet Hue equivalents