Exploring the Color #12359D

#12359D sits at 225° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 79% saturation and 34% lightness, it reads as a richly saturated, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 18, 53, 157 produces a 10.39:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #12359D is a distant relative of CSS navy — about 63 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 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