The hex color #3f860c is a dark color. The web-safe version is Hex
#339900. A complementary color is
#C079F3. The grayscale version is
#464646. A 20% lighter version of the original color is
#72B93F, and Hex
#0C5300 is the 20% darker color. If the color is saturated by 10%, you get
#3E8C06. If the color is desaturated by 10%, the color
#408012 is obtained.