Exploring the Color #3978D1

#3978D1 sits at 215° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 62% saturation and 52% lightness, it reads as a moderately saturated, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 57, 120, 209 produces a 4.78:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.

In RGB space #3978D1 is a close cousin of CSS royal blue — about 23 units away from #4169E1. 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 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