The hex color #064a6f is a dark color. The web-safe version is Hex
#003366. A complementary color is
#F9B590. The grayscale version is
#404040. A 20% lighter version of the original color is
#397DA2, and Hex
#00173C is the 20% darker color. If the color is saturated by 10%, you get
#004B74. If the color is desaturated by 10%, the color
#0C496A is obtained.