The hex color #3f3d1d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C0C2E2. The grayscale version is
#333333. A 20% lighter version of the original color is
#727050, and Hex
#0C0A00 is the 20% darker color. If the color is saturated by 10%, you get
#403E1B. If the color is desaturated by 10%, the color
#3E3C1F is obtained.