The hex color #100A8D is a dark color. The web-safe version is Hex
#000099. A complementary color is
#EFF572. The grayscale version is
#383838. A 20% lighter version of the original color is
#433DC0, and Hex
#00005A is the 20% darker color. If the color is saturated by 10%, you get
#0C0596. If the color is desaturated by 10%, the color
#140F84 is obtained.