The hex color #7a579c is a dark color. The web-safe version is Hex
#666699. A complementary color is
#85A863. The grayscale version is
#7A7A7A. A 20% lighter version of the original color is
#AD8ACF, and Hex
#472469 is the 20% darker color. If the color is saturated by 10%, you get
#7A549F. If the color is desaturated by 10%, the color
#7A5A99 is obtained.