The hex color #c3fd3f is a light color. The web-safe version is Hex
#CCFF33. A complementary color is
#3C02C0. The grayscale version is
#AAAAAA. A 20% lighter version of the original color is
#F6FF72, and Hex
#90CA0C is the 20% darker color. If the color is saturated by 10%, you get
#C5FF34. If the color is desaturated by 10%, the color
#C1F54A is obtained.