The hex color #3d6e3d is a dark color. The web-safe version is Hex
#336633. A complementary color is
#C291C2. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#70A170, and Hex
#0A3B0A is the 20% darker color. If the color is saturated by 10%, you get
#3B713B. If the color is desaturated by 10%, the color
#3F6B3F is obtained.