The hex color #2d0d3d is a dark color. The web-safe version is Hex
#330033. A complementary color is
#D2F2C2. The grayscale version is
#282828. A 20% lighter version of the original color is
#604070, and Hex
#00000A is the 20% darker color. If the color is saturated by 10%, you get
#2E0A3F. If the color is desaturated by 10%, the color
#2C103B is obtained.