The hex color #3d103d is a dark color. The web-safe version is Hex
#330033. A complementary color is
#C2EFC2. The grayscale version is
#2E2E2E. A 20% lighter version of the original color is
#704370, and Hex
#0A000A is the 20% darker color. If the color is saturated by 10%, you get
#3F0D3F. If the color is desaturated by 10%, the color
#3C133C is obtained.