The hex color #e4fa2f is a light color. The web-safe version is Hex
#CCFF33. A complementary color is
#1B05D0. The grayscale version is
#AFAFAF. A 20% lighter version of the original color is
#FFFF62, and Hex
#B1C700 is the 20% darker color. If the color is saturated by 10%, you get
#E9FF22. If the color is desaturated by 10%, the color
#DFF33C is obtained.