This meaning describes colors and appearances that are muted, lifeless, or unattractive.
The office walls were painted a drab gray.
He wore a drab brown coat.
This figurative meaning describes an experience, lifestyle, place, or work that feels uninteresting and repetitive.
The presentation was informative but drab.
She wanted to escape her drab routine.
As a noun, drab refers to a muted brown, gray, or olive color, especially one used in practical clothing and equipment.
The uniforms were dyed in drab.
Olive drab is common in military clothing.
