The hex color #558c6c is a dark color. The web-safe version is Hex
#669966. A complementary color is
#AA7393. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#88BF9F, and Hex
#225939 is the 20% darker color. If the color is saturated by 10%, you get
#528F6C. If the color is desaturated by 10%, the color
#58896C is obtained.