The hex color #539b6c is a light color. The web-safe version is Hex
#669966. A complementary color is
#AC6493. The grayscale version is
#737373. A 20% lighter version of the original color is
#86CE9F, and Hex
#206839 is the 20% darker color. If the color is saturated by 10%, you get
#509F6B. If the color is desaturated by 10%, the color
#56976D is obtained.