Exploring the Color #639B76

#639B76 sits at 140° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 22% saturation and 50% 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, 155, 118 produces a 6.48:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.

In RGB space #639B76 is a clear variant of CSS gray — about 41 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