#2188FF Hex Color

Pool Water #2188ff reads as a cool blue because its bright blue base has a slight cyan cast, giving it a crisp, energetic feel rather than the softness or warmth associated with violet-leaning blues.

Pool Water #2188ff pairs well with deep navy, charcoal, and cool white, giving its vivid cyan-blue intensity room to stand out in interfaces and accent details without adding visual clutter or heaviness.

Black text on Pool Water #2188ff reaches about a 6.0:1 contrast ratio, making it suitable for normal-sized text and meeting WCAG AA contrast requirements in typical interface use when the color is rendered accurately.