The hex color #a64fe6 is a dark color. The web-safe version is Hex
#9966FF. A complementary color is
#59B019. The grayscale version is
#9E9E9E. A 20% lighter version of the original color is
#D982FF, and Hex
#731CB3 is the 20% darker color. If the color is saturated by 10%, you get
#A747ED. If the color is desaturated by 10%, the color
#A557DF is obtained.