The hex color #3d4b2d is a dark color. The web-safe version is Hex
#333333. A complementary color is
#C2B4D2. The grayscale version is
#3C3C3C. A 20% lighter version of the original color is
#707E60, and Hex
#0A1800 is the 20% darker color. If the color is saturated by 10%, you get
#3D4C2B. If the color is desaturated by 10%, the color
#3D4A2F is obtained.