Exploring the Color #0A0B40

#0A0B40 sits at 239° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 73% saturation and 15% lightness, it reads as a richly saturated, deep tone — a weighted, dramatic presence with deep undertones. Its RGB mix of 10, 11, 64 produces a 18.51:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #0A0B40 is a distant relative of CSS navy — about 66 units away from #000080. Designers reach for blue hues at this saturation when the brief calls for bold, immediate signal, and at this lightness when they want weight, depth, and grounded contrast. On screen the cool cast tends to pair best with warm neutrals in the 25°-45° range to add life.

Darkening Shades

Lightening Shades