The hex color #6a858d is a dark color. The web-safe version is Hex
#669999. A complementary color is
#957A72. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#9DB8C0, and Hex
#37525A is the 20% darker color. If the color is saturated by 10%, you get
#68868E. If the color is desaturated by 10%, the color
#6C848C is obtained.