The hex color #186b3e is a dark color. The web-safe version is Hex
#006633. A complementary color is
#E794C1. The grayscale version is
#404040. A 20% lighter version of the original color is
#4B9E71, and Hex
#00380B is the 20% darker color. If the color is saturated by 10%, you get
#146F3E. If the color is desaturated by 10%, the color
#1C673E is obtained.