The hex color #4f891c is a dark color. The web-safe version is Hex
#669933. A complementary color is
#B076E3. The grayscale version is
#515151. A 20% lighter version of the original color is
#82BC4F, and Hex
#1C5600 is the 20% darker color. If the color is saturated by 10%, you get
#4F8F17. If the color is desaturated by 10%, the color
#4F8321 is obtained.