The hex color #1d5ca8 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#E2A357. The grayscale version is
#606060. A 20% lighter version of the original color is
#508FDB, and Hex
#002975 is the 20% darker color. If the color is saturated by 10%, you get
#165CAF. If the color is desaturated by 10%, the color
#245CA1 is obtained.