The hex color #99ec1e is a light color. The web-safe version is Hex
#99FF33. A complementary color is
#6613E1. The grayscale version is
#8C8C8C. A 20% lighter version of the original color is
#CCFF51, and Hex
#66B900 is the 20% darker color. If the color is saturated by 10%, you get
#9AF613. If the color is desaturated by 10%, the color
#98E229 is obtained.