The hex color #4fea68 is a light color. The web-safe version is Hex
#66FF66. A complementary color is
#B01597. The grayscale version is
#8B8B8B. A 20% lighter version of the original color is
#82FF9B, and Hex
#1CB735 is the 20% darker color. If the color is saturated by 10%, you get
#49F465. If the color is desaturated by 10%, the color
#55E16C is obtained.