The hex color #00048e is a dark color. The web-safe version is Hex
#000099. A complementary color is
#FFFB71. The grayscale version is
#313131. A 20% lighter version of the original color is
#3337C1, and Hex
#00005B is the 20% darker color. If the color is saturated by 10%, you get
#000097. If the color is desaturated by 10%, the color
#050885 is obtained.