The hex color #51016c is a dark color. The web-safe version is Hex
#660066. A complementary color is
#AEFE93. The grayscale version is
#3F3F3F. A 20% lighter version of the original color is
#84349F, and Hex
#1E0039 is the 20% darker color. If the color is saturated by 10%, you get
#530070. If the color is desaturated by 10%, the color
#4F0768 is obtained.