The hex color #1f43f0 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#E0BC0F. The grayscale version is
#717171. A 20% lighter version of the original color is
#5276FF, and Hex
#0010BD is the 20% darker color. If the color is saturated by 10%, you get
#173EFD. If the color is desaturated by 10%, the color
#2748E3 is obtained.