wanness
Lack of color
Wanness is the quality or state of being wan—that is, pale, sickly-looking, or lacking in color or vitality.
It typically describes a person's complexion when they appear unwell, exhausted, or drained of their usual healthy appearance.
The wanness of her face after the long illness worried her family.
The word carries connotations of weakness or fading energy rather than mere paleness.