It may be interesting to contrast Ursula K. Le Guin's comments on this issue (http://www.ursulakleguin.com/GedoSenkiResponse.html) in the Ghibli adaptation of her Earthsea books:

The issue of color:

My purpose in making most of the people of Earthsea colored, and the whites a marginal and rather backward people, was of course a moral one, aimed at young American and European readers. Fantasy heroes of the European tradition were conventionally white — just about universally so in 1968 — and darkness of skin was often associated with evil. By simply subverting an expectation, a novelist can undermine a prejudice.

The makers of the American TV version, while boasting that they were "color blind," reduced the colored population of Earthsea to one and a half. I have blasted them for whitewashing Earthsea, and do not forgive them for it.

The issue is different in Japan. I cannot address the issue of race in Japan because I know too little about it. But I know that an anime film runs smack into the almost immutable conventions of its genre. Most of the people in anime films look — to the American/European eye — white. I am told that the Japanese audience perceives them differently. I am told that they may perceive this Ged as darker than my eye does. I hope so. Most of the characters look white to me, but there is at least a nice variation of tans and beiges. And Tenar's fair hair and blue eyes are right, since she's a minority type from the Kargish islands.