The hex color #501de4 is a dark color. The web-safe version is Hex
#6633CC. A complementary color is
#AFE21B. The grayscale version is
#707070. A 20% lighter version of the original color is
#8350FF, and Hex
#1D00B1 is the 20% darker color. If the color is saturated by 10%, you get
#4D15F0. If the color is desaturated by 10%, the color
#5325D8 is obtained.