The hex color #1d3496 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#E2CB69. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#5067C9, and Hex
#000163 is the 20% darker color. If the color is saturated by 10%, you get
#18329D. If the color is desaturated by 10%, the color
#22378F is obtained.