Exploring the Color #0B639D

#0B639D sits at 204° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 87% saturation and 33% 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 11, 99, 157 produces a 6.39:1 contrast ratio against white, which clears WCAG AA for body text in that pairing.

In RGB space #0B639D is a clear variant of CSS teal — about 42 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