The hex color #40813c is a dark color. The web-safe version is Hex
#339933. A complementary color is
#BF7EC3. The grayscale version is
#545454. A 20% lighter version of the original color is
#73B46F, and Hex
#0D4E09 is the 20% darker color. If the color is saturated by 10%, you get
#3E853A. If the color is desaturated by 10%, the color
#427D3E is obtained.