The hex color #5d906c is a dark color. The web-safe version is Hex
#669966. A complementary color is
#A26F93. The grayscale version is
#737373. A 20% lighter version of the original color is
#90C39F, and Hex
#2A5D39 is the 20% darker color. If the color is saturated by 10%, you get
#5B936B. If the color is desaturated by 10%, the color
#5F8D6D is obtained.