The hex color #1a0e5f is a dark color. The web-safe version is Hex
#330066. A complementary color is
#E5F1A0. The grayscale version is
#2D2D2D. A 20% lighter version of the original color is
#4D4192, and Hex
#00002C is the 20% darker color. If the color is saturated by 10%, you get
#180B64. If the color is desaturated by 10%, the color
#1C115A is obtained.