The hex color #139a9c is a dark color. The web-safe version is Hex
#009999. A complementary color is
#EC6563. The grayscale version is
#6E6E6E. A 20% lighter version of the original color is
#46CDCF, and Hex
#006769 is the 20% darker color. If the color is saturated by 10%, you get
#0A9EA1. If the color is desaturated by 10%, the color
#1C9697 is obtained.