The hex color #0000ab is a dark color. The web-safe version is Hex
#000099. A complementary color is
#FFFF54. The grayscale version is
#393939. A 20% lighter version of the original color is
#3333DE, and Hex
#000078 is the 20% darker color. If the color is saturated by 10%, you get
#0000B6. If the color is desaturated by 10%, the color
#0606A0 is obtained.