The hex color #5b8e8c is a dark color. The web-safe version is Hex
#669999. A complementary color is
#A47173. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#8EC1BF, and Hex
#285B59 is the 20% darker color. If the color is saturated by 10%, you get
#58908E. If the color is desaturated by 10%, the color
#5E8C8A is obtained.