The hex color #1d748c is a dark color. The web-safe version is Hex
#336699. A complementary color is
#E28B73. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#50A7BF, and Hex
#004159 is the 20% darker color. If the color is saturated by 10%, you get
#167691. If the color is desaturated by 10%, the color
#247288 is obtained.