the belief that all members of each race possess characteristics or abilities specific to that race, esp. so as to distinguish it as inferior or superior to another race or races.
It isn't about hatred. A bias towards hiring people of one race (or against hiring people of a race) fits in this, because the only reason to have that bias is that members of that race don't have the right characteristics or abilities.
Example: "Company doesn't hire black people because they wouldn't be a culture fit" assumes all black people have the characteristic: culture mismatch.
Hidden bias is still bias: People with "black" names don't get called, and a commonly cited reason is "that name sounds ignorant" (as if a person chooses their own name). And back it up with "well if they care, they would call themselves something normal, like mike".
Biases about race can exist in a person, but that doesn't mean you have to act on them. It doesn't mean you can't recognize them, evaluate them, and if they make no sense, work to discard them. Having biases may be human, but so is the ability to introspect and to change biases.