The hex color #3d5d3c is a dark color. The web-safe version is Hex
#336633. A complementary color is
#C2A2C3. The grayscale version is
#474747. A 20% lighter version of the original color is
#70906F, and Hex
#0A2A09 is the 20% darker color. If the color is saturated by 10%, you get
#3C5F3B. If the color is desaturated by 10%, the color
#3E5B3D is obtained.