The hex color #54ff00 is a light color. The web-safe version is Hex
#66FF00. A complementary color is
#AB00FF. The grayscale version is
#717171. A 20% lighter version of the original color is
#87FF33, and Hex
#21CC00 is the 20% darker color. If the color is saturated by 10%, you get
#51FF00. If the color is desaturated by 10%, the color
#57F10B is obtained.