The hex color #1738a7 is a dark color. The web-safe version is Hex
#003399. A complementary color is
#E8C758. The grayscale version is
#525252. A 20% lighter version of the original color is
#4A6BDA, and Hex
#000574 is the 20% darker color. If the color is saturated by 10%, you get
#1135B0. If the color is desaturated by 10%, the color
#1D3B9F is obtained.