The hex color #15376c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#EAC893. The grayscale version is
#3D3D3D. A 20% lighter version of the original color is
#486A9F, and Hex
#000439 is the 20% darker color. If the color is saturated by 10%, you get
#113671. If the color is desaturated by 10%, the color
#193867 is obtained.