The hex color #0a389c is a dark color. The web-safe version is Hex
#003399. A complementary color is
#F5C763. The grayscale version is
#4A4A4A. A 20% lighter version of the original color is
#3D6BCF, and Hex
#000569 is the 20% darker color. If the color is saturated by 10%, you get
#0436A4. If the color is desaturated by 10%, the color
#103A94 is obtained.