Please help find this bridesmaid dress color.

My suggestion would be to go either to local salons or online and order swatches. This way you can see the color in person instead of just online. Sometimes colors look completely different in person than on a screen. I will say Azazie, David's Bridal, Birdy Gray, and Kennedy Blue all hav an olive color and you should be able to get swatches from all of them.

This looks like Revelry’s color “olive”
Here’s a side-by-side (obviously it looks a little different because the Revelry dress is a different fabric without sheen)

Here is Revelry’s “deep olive” in a similar material:

I’ve only seen that color at Revelry and they have excellent quality