The hex color #4fa41f is a dark color. The web-safe version is Hex
#669933. A complementary color is
#B05BE0. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#82D752, and Hex
#1C7100 is the 20% darker color. If the color is saturated by 10%, you get
#4EAB19. If the color is desaturated by 10%, the color
#509D25 is obtained.