The hex color #b64e9a is a dark color. The web-safe version is Hex
#CC6699. A complementary color is
#49B165. The grayscale version is
#8A8A8A. A 20% lighter version of the original color is
#E981CD, and Hex
#831B67 is the 20% darker color. If the color is saturated by 10%, you get
#BA489C. If the color is desaturated by 10%, the color
#B25498 is obtained.