The hex color #81337c is a dark color. The web-safe version is Hex
#993366. A complementary color is
#7ECC83. The grayscale version is
#656565. A 20% lighter version of the original color is
#B466AF, and Hex
#4E0049 is the 20% darker color. If the color is saturated by 10%, you get
#842E7E. If the color is desaturated by 10%, the color
#7E387A is obtained.