The hex color #3d2e6e is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C2D191. The grayscale version is
#484848. A 20% lighter version of the original color is
#7061A1, and Hex
#0A003B is the 20% darker color. If the color is saturated by 10%, you get
#3C2B72. If the color is desaturated by 10%, the color
#3E316A is obtained.