The hex color #99da6c is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#662593. The grayscale version is
#A0A0A0. A 20% lighter version of the original color is
#CCFF9F, and Hex
#66A739 is the 20% darker color. If the color is saturated by 10%, you get
#98E067. If the color is desaturated by 10%, the color
#9AD471 is obtained.