The hex color #3f390d is a dark color. The web-safe version is Hex
#333300. A complementary color is
#C0C6F2. The grayscale version is
#2C2C2C. A 20% lighter version of the original color is
#726C40, and Hex
#0C0600 is the 20% darker color. If the color is saturated by 10%, you get
#413A0A. If the color is desaturated by 10%, the color
#3D3810 is obtained.