The hex color #519c9c is a light color. The web-safe version is Hex
#669999. A complementary color is
#AE6363. The grayscale version is
#838383. A 20% lighter version of the original color is
#84CFCF, and Hex
#1E6969 is the 20% darker color. If the color is saturated by 10%, you get
#4C9F9F. If the color is desaturated by 10%, the color
#569A9A is obtained.