Aqua — from English 'aqua', referring to water or the aqua (bluish) color; also appears as product or character names. Meaning depends on context.
新しいドレスはアクア色でとても爽やかに見えた。
The new dress was aqua-colored and looked very refreshing.
トヨタのアクアは燃費の良いハイブリッド車だ。
The Toyota Aqua is a fuel-efficient hybrid car.
そのアニメにはアクアという名前のキャラクターが登場する。
That anime features a character named Aqua.