似合う
にあう (niau)
to suit, to look good on
verb (godan)
Example
その青いシャツはあなたによく似合います。
そのあおいシャツはあなたによくにあいます。
Sono aoi shatsu wa anata ni yoku niaimasu.
That blue shirt looks really good on you.
Used when something matches well with someone's appearance or personality. Often used with に particle.