She appeared at the party wearing a gorgeous dress.
会場は華やかな装飾で彩られていた。
The venue was decorated with brilliant ornaments.
prosperous; flourishing; thriving
Used for a lively, successful, and thriving state, often in contexts like careers, social scenes, or historical periods. Less common than the visual sense.
彼は華やかな経歴の持ち主だ。
He has a brilliant career.
この街はかつて華やかな商業の中心地だった。
This town was once a flourishing commercial center.
She stood on stage wearing a gorgeous costume.
The entertainment industry looks like a glamorous world, but a lot of hard work goes on behind the scenes.
When Christmas season comes, the streets become bright and festive.
He is a businessman with a brilliant career.
華やか describes something bright and showy in general, while 彩り specifically points to the touch of color or visual vibrancy something adds.