drab 1 
(drăb)
(drăb)adj. drab·ber, drab·best
1.
a. Of a dull grayish to yellowish brown.
b. Of a light olive brown or khaki color.
2. Faded and dull in appearance.
3. Dull or commonplace in character; dreary: a drab personality. See Synonyms at dull.
n.
1. A dull grayish to yellowish or light olive brown.
2. Cloth of this color or of an unbleached natural color.
[Alteration of obsolete French drap, cloth, from Old French; see DRAPE.]
drably adv.
drabness n.