The hex color #3fba3d is a light color. The web-safe version is Hex
#33CC33. A complementary color is
#C045C2. The grayscale version is
#676767. A 20% lighter version of the original color is
#72ED70, and Hex
#0C870A is the 20% darker color. If the color is saturated by 10%, you get
#3BC239. If the color is desaturated by 10%, the color
#43B241 is obtained.