ΔE 4.9, very close: most people won’t see a difference side by side. Raging Sea is cooler than Green Blue. They are different kinds of paint: AMMO by Mig Green Blue is an opaque base/layer paint and Army Painter Raging Sea is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 5). Raging Sea is cooler than Green Blue. They are different kinds of paint.
The same difference applies the other way round: Green Blue is warmer.
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 Green Blue on the colour wheel See Raging Sea on the colour wheel
All matches: Green Blue equivalents · Raging Sea equivalents