The hex color #1f45c5 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E0BA3A. The grayscale version is
#636363. A 20% lighter version of the original color is
#5278F8, and Hex
#001292 is the 20% darker color. If the color is saturated by 10%, you get
#1842CF. If the color is desaturated by 10%, the color
#2648BB is obtained.