Well all I was going to say is that I thought of it as a nn for
Caroline years ago (I know I am not unique in this, I have since heard of it before) and it has been the name of a very minor character type person of mine ever since. I really like it, I think it has a sort of sweet quirkiness to it.
But since you ask about it only as a name on its own, I don't know. If it had some sort of separate etymology I'd be more for it, or even if it were a more established nickname. But since it's neither of those things to my knowledge, it seems like just a random sound, which isn't my thing to use for a name. It sounds so close to
Carol (in my accent... we cut off consonants a lot) that I think it would be confusing, as well as people probably assuming it's short for
Caroline in the first place.