The hex color #10011a is a dark color. The web-safe version is Hex
#000033. A complementary color is
#EFFEE5. The grayscale version is
#0E0E0E. A 20% lighter version of the original color is
#43344D, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#10001B. If the color is desaturated by 10%, the color
#100219 is obtained.