The hex color #0004a9 is a dark color. The web-safe version is Hex
#000099. A complementary color is
#FFFB56. The grayscale version is
#3A3A3A. A 20% lighter version of the original color is
#3337DC, and Hex
#000076 is the 20% darker color. If the color is saturated by 10%, you get
#0000B4. If the color is desaturated by 10%, the color
#06099E is obtained.