UNOBTRUSIVE

[adjective] approving - not noticeable; seeming to fit in well with the backgroundIn the north of the city the army's presence is unobtrusive.He was the perfect waiter, being efficient, unobtrusive and yet attentive.I've replaced that orange flowery wallpaper with a more unobtrusive beige and white print.Make-up this season is unobtrusive and natural-looking.