The hex color #3e987c is a dark color. The web-safe version is Hex
#339966. A complementary color is
#C16783. The grayscale version is
#717171. A 20% lighter version of the original color is
#71CBAF, and Hex
#0B6549 is the 20% darker color. If the color is saturated by 10%, you get
#399C7D. If the color is desaturated by 10%, the color
#43947B is obtained.