Exploring the Color #305B4A

#305B4A sits at 156° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 31% saturation and 27% lightness, it reads as a softly muted, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 48, 91, 74 produces a 7.72:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.

In RGB space #305B4A is a clear variant of CSS sea green — about 50 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 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