The hex color #b64ef2 is a dark color. The web-safe version is Hex
#CC66FF. A complementary color is
#49B10D. The grayscale version is
#A7A7A7. A 20% lighter version of the original color is
#E981FF, and Hex
#831BBF is the 20% darker color. If the color is saturated by 10%, you get
#B745F9. If the color is desaturated by 10%, the color
#B557EB is obtained.