Exploring the Color #90E1E1

#90E1E1 sits at 180° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 57% saturation and 72% lightness, it reads as a moderately saturated, light tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 144, 225, 225 produces a 14.04:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.

In RGB space #90E1E1 is a close cousin of CSS sky blue — about 23 units away from #87CEEB. Designers reach for cyan hues at this saturation when the brief calls for a conversational, mid-energy register, and at this lightness when they want lift, air, and gentle emphasis. On screen the cool cast tends to pair best with warm neutrals in the 25°-45° range to add life.

Darkening Shades

Lightening Shades