Exploring the Color #1B307E

#1B307E sits at 227° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 65% saturation and 30% 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 27, 48, 126 produces a 11.86:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #1B307E is a clear variant of CSS navy — about 55 units away from #000080. Designers reach for blue hues at this saturation when the brief calls for a conversational, mid-energy register, 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