The hex color #1e178f is a dark color. The web-safe version is Hex
#330099. A complementary color is
#E1E870. The grayscale version is
#414141. A 20% lighter version of the original color is
#514AC2, and Hex
#00005C is the 20% darker color. If the color is saturated by 10%, you get
#1A1397. If the color is desaturated by 10%, the color
#221B87 is obtained.