The hex color #1d367c is a dark color. The web-safe version is Hex
#333366. A complementary color is
#E2C983. The grayscale version is
#454545. A 20% lighter version of the original color is
#5069AF, and Hex
#000349 is the 20% darker color. If the color is saturated by 10%, you get
#193582. If the color is desaturated by 10%, the color
#213877 is obtained.