The hex color #4ffe11 is a light color. The web-safe version is Hex
#66FF00. A complementary color is
#B001EE. The grayscale version is
#757575. A 20% lighter version of the original color is
#82FF44, and Hex
#1CCB00 is the 20% darker color. If the color is saturated by 10%, you get
#4BFF07. If the color is desaturated by 10%, the color
#53F01B is obtained.