The hex color #68489c is a dark color. The web-safe version is Hex
#663399. A complementary color is
#97B763. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#9B7BCF, and Hex
#351569 is the 20% darker color. If the color is saturated by 10%, you get
#6744A1. If the color is desaturated by 10%, the color
#694C97 is obtained.