The hex color #8e66a9 is a dark color. The web-safe version is Hex
#996699. A complementary color is
#719956. The grayscale version is
#8A8A8A. A 20% lighter version of the original color is
#C199DC, and Hex
#5B3376 is the 20% darker color. If the color is saturated by 10%, you get
#8E62AC. If the color is desaturated by 10%, the color
#8E6AA6 is obtained.