The hex color #99c42f is a light color. The web-safe version is Hex
#99CC33. A complementary color is
#663BD0. The grayscale version is
#848484. A 20% lighter version of the original color is
#CCF762, and Hex
#669100 is the 20% darker color. If the color is saturated by 10%, you get
#9BCA27. If the color is desaturated by 10%, the color
#97BE38 is obtained.