I'm going to take a stab at this. If you are referring to the Cool Blue lens, then these two are NOT the same.
American Opitical made the Cool Blue. If you ever used one, then, you would know why they are bad a$$. I used one for years. Very easy on the eyes. Was the best lens on the market. My welding supply man told me the reason AO doesn't make the "orginial" lens anymore was because the chemical they used to give it that "blue tint" blew up in one of their plants, so they no longer use it. They went with something else which gives it a "orange tint" and it's just not the same.
I don't know anything about this "Cobalt Blue" lens. Never even heard of it.