The hex color #407f4c is a dark color. The web-safe version is Hex
#336633. A complementary color is
#BF80B3. The grayscale version is
#595959. A 20% lighter version of the original color is
#73B27F, and Hex
#0D4C19 is the 20% darker color. If the color is saturated by 10%, you get
#3E834B. If the color is desaturated by 10%, the color
#437B4D is obtained.