Exploring the Color #5B9171

#5B9171 sits at 144° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 23% saturation and 46% 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 91, 145, 113 produces a 5.73:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.

In RGB space #5B9171 is a clear variant of CSS dim gray — about 43 units away from #696969. 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