The hex color #28a96e is a dark color. The web-safe version is Hex
#339966. A complementary color is
#D75691. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#5BDCA1, and Hex
#00763B is the 20% darker color. If the color is saturated by 10%, you get
#21AF6E. If the color is desaturated by 10%, the color
#2FA36E is obtained.