The hex color #3ad5a9 is a light color. The web-safe version is Hex
#33CC99. A complementary color is
#C52A56. The grayscale version is
#939393. A 20% lighter version of the original color is
#6DFFDC, and Hex
#07A276 is the 20% darker color. If the color is saturated by 10%, you get
#31DCAB. If the color is desaturated by 10%, the color
#43CEA7 is obtained.