The hex color #5b814c is a dark color. The web-safe version is Hex
#669933. A complementary color is
#A47EB3. The grayscale version is
#636363. A 20% lighter version of the original color is
#8EB47F, and Hex
#284E19 is the 20% darker color. If the color is saturated by 10%, you get
#5A844A. If the color is desaturated by 10%, the color
#5C7E4E is obtained.