Exploring the Color #0A5999

#0A5999 sits at 207° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 88% saturation and 32% lightness, it reads as a fully saturated, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 10, 89, 153 produces a 7.24:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #0A5999 is a clear variant of CSS teal — about 47 units away from #008080. Designers reach for azure hues at this saturation when the brief calls for bold, immediate signal, and at this lightness when they want a present, comfortable mid-canvas voice. On screen the cool cast tends to pair best with warm neutrals in the 25°-45° range to add life.

Darkening Shades

Lightening Shades