The hex color #3f1e2d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C0E1D2. The grayscale version is
#2E2E2E. A 20% lighter version of the original color is
#725160, and Hex
#0C0000 is the 20% darker color. If the color is saturated by 10%, you get
#411C2D. If the color is desaturated by 10%, the color
#3D202D is obtained.