Exploring the Color #819BF4

#819BF4 sits at 226° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 84% saturation and 73% lightness, it reads as a richly saturated, light tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 129, 155, 244 produces a 7.93:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.

In RGB space #819BF4 is a clear variant of CSS sky blue — about 52 units away from #87CEEB. Designers reach for blue hues at this saturation when the brief calls for bold, immediate signal, 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