The hex color #0a130d is a dark color. The web-safe version is Hex
#000000. A complementary color is
#F5ECF2. The grayscale version is
#0E0E0E. A 20% lighter version of the original color is
#3D4640, and Hex
#000000 is the 20% darker color. If the color is saturated by 10%, you get
#0A140D. If the color is desaturated by 10%, the color
#0A130D is obtained.