ΔE 22.0, loose: different enough that you should pick on purpose. Gravedigger Denim is a little darker, much more muted than Cloudburst Blue. They are different kinds of paint: Army Painter Cloudburst Blue is a one-coat contrast-style paint and Formula P3 Gravedigger Denim 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 22). Gravedigger Denim is a little darker, much more muted than Cloudburst Blue. They are different kinds of paint.
The same difference applies the other way round: Cloudburst Blue is a little lighter, 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 Cloudburst Blue on the colour wheel See Gravedigger Denim on the colour wheel
All matches: Cloudburst Blue equivalents · Gravedigger Denim equivalents