The hex color #040d45 is a dark color. The web-safe version is Hex
#000033. A complementary color is
#FBF2BA. The grayscale version is
#1D1D1D. A 20% lighter version of the original color is
#374078, and Hex
#000012 is the 20% darker color. If the color is saturated by 10%, you get
#020B49. If the color is desaturated by 10%, the color
#060F41 is obtained.