The hex color #4f19e8 is a dark color. The web-safe version is Hex
#6600FF. A complementary color is
#B0E617. The grayscale version is
#707070. A 20% lighter version of the original color is
#824CFF, and Hex
#1C00B5 is the 20% darker color. If the color is saturated by 10%, you get
#4C10F4. If the color is desaturated by 10%, the color
#5222DC is obtained.