The hex color #81619c is a dark color. The web-safe version is Hex
#996699. A complementary color is
#7E9E63. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#B494CF, and Hex
#4E2E69 is the 20% darker color. If the color is saturated by 10%, you get
#815E9F. If the color is desaturated by 10%, the color
#816499 is obtained.