The hex color #3d1d3e is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2E2C1. The grayscale version is
#333333. A 20% lighter version of the original color is
#705071, and Hex
#0A000B is the 20% darker color. If the color is saturated by 10%, you get
#3E1B3F. If the color is desaturated by 10%, the color
#3C1F3D is obtained.