The hex color #674a6e is a dark color. The web-safe version is Hex
#663366. A complementary color is
#98B591. The grayscale version is
#606060. A 20% lighter version of the original color is
#9A7DA1, and Hex
#34173B is the 20% darker color. If the color is saturated by 10%, you get
#68486F. If the color is desaturated by 10%, the color
#664C6D is obtained.