The hex color #3d1f1e is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2E0E1. The grayscale version is
#292929. A 20% lighter version of the original color is
#705251, and Hex
#0A0000 is the 20% darker color. If the color is saturated by 10%, you get
#3F1E1D. If the color is desaturated by 10%, the color
#3B201F is obtained.