If 'caucasians' only had blue eyes/blonde hair, then that would mean less than 20% of Europeans were Caucasians, and most of those only in the Scandinavian countries. Brown eyes, brown hair and white skin is found anywhere, especially western England, Wales, southern Germany, central Europe, France, northern Spain, Italy. read more
It’s the Blue eyes that makes the combo less common than, say Brown Hair and Brown or Green eyes, however Red Hair and Blue Eyes is perhaps the least common. Keep in mind that such frequencies are often determined by nationality so that folks of Celtic descent, for example, more commonly have Blue eyes. read more