The hex color #4fe41d is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#B01BE2. The grayscale version is
#707070. A 20% lighter version of the original color is
#82FF50, and Hex
#1CB100 is the 20% darker color. If the color is saturated by 10%, you get
#4CF015. If the color is desaturated by 10%, the color
#52D825 is obtained.