The hex color #3d1e5d is a dark color. The web-safe version is Hex
#333366. A complementary color is
#C2E1A2. The grayscale version is
#3D3D3D. A 20% lighter version of the original color is
#705190, and Hex
#0A002A is the 20% darker color. If the color is saturated by 10%, you get
#3D1B60. If the color is desaturated by 10%, the color
#3D215A is obtained.