The hex color #1f43db is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E0BC24. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#5276FF, and Hex
#0010A8 is the 20% darker color. If the color is saturated by 10%, you get
#183FE6. If the color is desaturated by 10%, the color
#2647D0 is obtained.