The Collaborative International Dictionary of English v.0.48:
Pallidness \Pal"lid*ness\, n. The quality or state of being pallid; paleness; pallor; wanness. [1913 Webster]WordNet (r) 3.0 (2006):
pallidness n 1: unnatural lack of color in the skin (as from bruising or sickness or emotional distress) [syn: lividness, lividity, luridness, paleness, pallidness, pallor, wanness, achromasia]