Exploring the Color #51B96B

#51B96B sits at 135° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 43% 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 81, 185, 107 produces a 8.50:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.

In RGB space #51B96B is a distant relative of CSS sea green — about 61 units away from #2E8B57. Designers reach for spring green 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

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