The hex color #528d7c is a dark color. The web-safe version is Hex
#669966. A complementary color is
#AD7283. The grayscale version is
#747474. A 20% lighter version of the original color is
#85C0AF, and Hex
#1F5A49 is the 20% darker color. If the color is saturated by 10%, you get
#4F907D. If the color is desaturated by 10%, the color
#558A7B is obtained.