The hex color #b51bb5 is a dark color. The web-safe version is Hex
#CC33CC. A complementary color is
#4AE44A. The grayscale version is
#828282. A 20% lighter version of the original color is
#E84EE8, and Hex
#820082 is the 20% darker color. If the color is saturated by 10%, you get
#BA11BA. If the color is desaturated by 10%, the color
#B025B0 is obtained.