This is the cardigan I purchased at H&M when I was in New York last week. I initially thought that it was seafoam (or mint, if you prefer) but now that I think about it, it’s a little too saturated to be seafoam, which is generally quite pale.
It’s not turquoise, since turquoise is more blue than green, and it’s not teal, becuase teal is much, much darker.
It might also be worth noting that these Towne & Reese bracelets are a perfect color match for the cardigan, and the color they are listed as is turquoise.
So what color is it?