The hex color #d3f73e is a light color. The web-safe version is Hex
#CCFF33. A complementary color is
#2C08C1. The grayscale version is
#ADADAD. A 20% lighter version of the original color is
#FFFF71, and Hex
#A0C40B is the 20% darker color. If the color is saturated by 10%, you get
#D7FE33. If the color is desaturated by 10%, the color
#CFF049 is obtained.