The hex color #04032b is a dark color. The web-safe version is Hex
#000033. A complementary color is
#FBFCD4. The grayscale version is
#111111. A 20% lighter version of the original color is
#37365E, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#03022E. If the color is desaturated by 10%, the color
#050428 is obtained.