How do you know the race of people using anonymous forum names?
Anyway, per the dictionary:
Definition of whiteness:
1 : the quality or state of being white: such as
a : white color
The whiteness of a diamond is the most important factor, unless you're buying a fancy color like yellow or pink.
— The New York Times Style Magazine
b : PALLOR, PALENESS
… watching the way … his stomach hung pregnant over his belt, the whiteness of his skin, the blueness of his veins …
— Zadie Smith
c : freedom from stain : CLEANNESS
During the day, housewives pegged out billowing sheets, knowing that here in the tough North they were judged on clean linen and the whiteness of the front doorstep …
— Paul West
2 : something (such as an area or a substance) that is white in color
… this widening in the river, a place indistinguishable in winter from the surrounding whiteness …
— John Hildebrand
The curtains were being drawn across the aeroplane windows; a screen was lowered at the head of the cabin; images flickered on the whiteness ahead.
— Shashi Tharoor
This is a gelid whiteness, studded with a few bits of … fruit and altogether devoid of discernible flavor or sweetness.
— Jay Jacobs
3 : the fact or state of belonging to a population group that has light pigmentation of the skin : the fact or state of being white (see WHITE entry 1 sense 2a)
Racial or color categories communicate the long-standing color scale in which lightness/whiteness is more desirable and more socially valued than darkness/blackness.
— Nadine Fernandez
Did I yearn to convert to whiteness? As a child, if it had been a matter of pushing a button, there were times when I would have pushed it as idly and insistently as a man waiting for an elevator.
— Kenji Yoshino
The proposition that whiteness, as such, has no content but is rather a negation, the identity of not-being-black, is a shocking revelation to most white Americans, who continue to imagine that there is a nonracist way of defining their whiteness in positive terms, although they are tongue-tied when asked to say what it is.
— Orlando Patterson
www.merriam-webster.com/dictionary/whiteness