Why did hitler hate slavs ?

although he did not fit his ideal image of ubermenschen, he hated all others who didnt too. since many slavs are ''aryan''(blue eyes and blond) why did he hate them so much? how does it make sense ...
and ..there are some jews who are white, blond and blue eyed, does that make them aryan?
Update: okay....why does everyone keep telling me he didnt have blue eyes and blond hair, i already mentioned that...
is a jew that fit this description considered aryan?:S
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