ΔE 14.2, fair: the same colour family, but not a straight swap. Cobalt Green is a little darker, more saturated than Amulet Aqua.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Cobalt Green is a little darker, more saturated than Amulet Aqua.
The same difference applies the other way round: Amulet Aqua 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 Amulet Aqua on the colour wheel See Cobalt Green on the colour wheel
All matches: Amulet Aqua equivalents · Cobalt Green equivalents