The hex color #99c44f is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#663BB0. The grayscale version is
#8F8F8F. A 20% lighter version of the original color is
#CCF782, and Hex
#66911C is the 20% darker color. If the color is saturated by 10%, you get
#9AC949. If the color is desaturated by 10%, the color
#98BF55 is obtained.