The hex color #548c7c is a dark color. The web-safe version is Hex
#669966. A complementary color is
#AB7383. The grayscale version is
#747474. A 20% lighter version of the original color is
#87BFAF, and Hex
#215949 is the 20% darker color. If the color is saturated by 10%, you get
#518E7D. If the color is desaturated by 10%, the color
#578A7B is obtained.