The hex color #5f429c is a dark color. The web-safe version is Hex
#663399. A complementary color is
#A0BD63. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#9275CF, and Hex
#2C0F69 is the 20% darker color. If the color is saturated by 10%, you get
#5E3EA1. If the color is desaturated by 10%, the color
#604697 is obtained.