The hex color #000b0f is a dark color. The web-safe version is Hex
#000000. A complementary color is
#FFF4F0. The grayscale version is
#090909. A 20% lighter version of the original color is
#333E42, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#000B10. If the color is desaturated by 10%, the color
#010B0E is obtained.