The hex color #c5ff3f is a light color. The web-safe version is Hex
#CCFF33. A complementary color is
#3A00C0. The grayscale version is
#ACACAC. A 20% lighter version of the original color is
#F8FF72, and Hex
#92CC0C is the 20% darker color. If the color is saturated by 10%, you get
#C8FF34. If the color is desaturated by 10%, the color
#C2F74A is obtained.