The hex color #1d13a4 is a dark color. The web-safe version is Hex
#330099. A complementary color is
#E2EC5B. The grayscale version is
#474747. A 20% lighter version of the original color is
#5046D7, and Hex
#000071 is the 20% darker color. If the color is saturated by 10%, you get
#190EAD. If the color is desaturated by 10%, the color
#21189B is obtained.