I don't think there's a really close "rattlecan" equivalent.
I tried looking for one back when I was researching colors to do my armor.
I had found one color chart somewhere that showed FS numbers and it claimed that Testors Model Master Dark Green (#1910) was the same. . . but it wasn't.
The US Med Green by Floquil has a significantly bluer base to it. It's really pretty noticeable.
There's a color used by Rustoleum called Spruce Green. It has a dull Satin finish, which probably you'll want to spray it a bit with a clear flat finish, and a mist of flat black for weathering. That's what I use on my armor.