The hex color #51447c is a dark color. The web-safe version is Hex
#663366. A complementary color is
#AEBB83. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#8477AF, and Hex
#1E1149 is the 20% darker color. If the color is saturated by 10%, you get
#50427F. If the color is desaturated by 10%, the color
#524679 is obtained.