While certain powerful mystical ladies, not exactly women of color,
Phoenixx9.
Other non-women-of-color would include Satanna (sister of Daimon Hellstrom), Topaz (former apprentice of Dr. Strange) and Jennifer Kale (sorceress associated with the Nexus of All Realities / Man-Thing).
It is interesting / annoying that the really buff mystical ladies, like Enchantress, Karnilla, Morgan LeFay, Agatha Harkness, Clea, Umar, etc. tend to be white. Margali Szardos (and her daughter Jimaine) are two of the closest to women-of-color in that sisterhood.
Ooh, edited to add:
Vertigo, leader of the Salem's Seven coven (and granddaughter of Agatha Harkness), is biracial (visibly African-American, but her dad is white, Nicholas Scratch), is both a halfway decent witch, and also bound to a demon which grants her vertigo-inducing powers.