The hex color #104c7c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#EFB383. The grayscale version is
#484848. A 20% lighter version of the original color is
#437FAF, and Hex
#001949 is the 20% darker color. If the color is saturated by 10%, you get
#0A4C81. If the color is desaturated by 10%, the color
#164C77 is obtained.