The hex color #728b3c is a dark color. The web-safe version is Hex
#669933. A complementary color is
#8D74C3. The grayscale version is
#686868. A 20% lighter version of the original color is
#A5BE6F, and Hex
#3F5809 is the 20% darker color. If the color is saturated by 10%, you get
#738E38. If the color is desaturated by 10%, the color
#718840 is obtained.