ΔE 20.7, loose: different enough that you should pick on purpose. Dusken Green is a little lighter, more saturated, warmer than Metallic Blue Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Dusken Green is a little lighter, more saturated, warmer than Metallic Blue Green.
The same difference applies the other way round: Metallic Blue Green is a little darker, more muted, 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 Metallic Blue Green on the colour wheel See Dusken Green on the colour wheel
All matches: Metallic Blue Green equivalents · Dusken Green equivalents