The hex color #3d5a1d is a dark color. The web-safe version is Hex
#336633. A complementary color is
#C2A5E2. The grayscale version is
#3C3C3C. A 20% lighter version of the original color is
#708D50, and Hex
#0A2700 is the 20% darker color. If the color is saturated by 10%, you get
#3D5D1A. If the color is desaturated by 10%, the color
#3D5720 is obtained.