When you reference ethnicity, are you thinking culture, or just skin colour?

For a hypothetical example, consider another knock-off Tolkienish fantasy novel with elves, dwarves, etc. in a setting similar to Tolkien's middle earth.

Would you consider this book inclusive if some of the characters, or the general populace, were described as having non-white skin colours? It would have the same general themes and background setting as Tolkien, the non-white characters wouldn't be different in any way beyond being described as having darker skin colour.