Dark chocolate is one good example. The chocolates which do not contain soy lecithin and other ingredients opposed by paleo diet, are safe to be eaten. Not all chocolates are made using the same level of ingredients, so it is better for you to go by one rule which is that the more the cocoa content, the more paleo friendly chocolate it is. While looking for a paleo friendly chocolate, see if the bar is set at a percentage where it is at least 70 % dairy free. It's not the original ingredients of chocolate which makes it non-paleo, in fact, it is the extra junk which is added to it, making it more of a candy than chocolate. Cocoa beans and its contents themselves are healthy to be eaten under the paleo diet.

Chocolak is one trusted online site, which deals in a variety of chocolates including your specific requirement for a paleo friendly chocolate.