The hex color #558e4c is a dark color. The web-safe version is Hex
#669933. A complementary color is
#AA71B3. The grayscale version is
#656565. A 20% lighter version of the original color is
#88C17F, and Hex
#225B19 is the 20% darker color. If the color is saturated by 10%, you get
#53924A. If the color is desaturated by 10%, the color
#578A4F is obtained.