Exploring the Color #40D494

#40D494 sits at 154° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 63% saturation and 54% 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 64, 212, 148 produces a 11.06:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.

In RGB space #40D494 is a distant relative of CSS turquoise — about 61 units away from #40E0D0. 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

Lightening Shades