Exploring the Color #213F75

#213F75 sits at 219° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 56% saturation and 29% lightness, it reads as a moderately saturated, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 33, 63, 117 produces a 10.33:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #213F75 is a distant relative of CSS navy — about 72 units away from #000080. Designers reach for azure hues at this saturation when the brief calls for a conversational, mid-energy register, 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