whiteness

noun3

1. •
   The state or quality of being white (all senses).

   • [Snow] may […] exchange its whiteness for yellowness, without losing its right to be called snow; […] — 1666
2. •
   The quality of being white (in the racial sense).
3. •
   The quality of being white noise.

   • Despite this criticism, this check for whiteness of a time series enjoys much popularity as it is very easy to carry out. — 2005