The hex color #a6638e is a dark color. The web-safe version is Hex
#996699. A complementary color is
#599C71. The grayscale version is
#888888. A 20% lighter version of the original color is
#D996C1, and Hex
#73305B is the 20% darker color. If the color is saturated by 10%, you get
#A95F8F. If the color is desaturated by 10%, the color
#A3678D is obtained.