Exploring the Color #63A979

#63A979 sits at 139° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 29% saturation and 53% lightness, it reads as a softly muted, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 99, 169, 121 produces a 7.48:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.

In RGB space #63A979 is a clear variant of CSS gray — about 51 units away from #808080. Designers reach for spring green hues at this saturation when the brief calls for restraint and atmosphere, 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