Exploring the Color #15582D

#15582D sits at 141° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 61% saturation and 21% lightness, it reads as a moderately saturated, deep tone — a weighted, dramatic presence with deep undertones. Its RGB mix of 21, 88, 45 produces a 8.52:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #15582D is a clear variant of CSS forest green — about 54 units away from #228B22. 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 weight, depth, and grounded contrast. On screen the cool cast tends to pair best with warm neutrals in the 25°-45° range to add life.

Darkening Shades

Lightening Shades