1
plain;simple;subdued;sober
Antonym:
派手 (はで)
僕的にはもっと地味ってか渋い服が欲しいんですけどね。
For my tastes, I'd prefer plainer, or rather, more tasteful clothing.
2
reserved (behaviour, attitude, etc.);modest;quiet;unobtrusive
彼女は地味な色を好む。
She favors quiet colors.
3
quite;a (little) bit
as 地味に