The hex color #54ee18 is a light color. The web-safe version is Hex
#66FF00. A complementary color is
#AB11E7. The grayscale version is
#737373. A 20% lighter version of the original color is
#87FF4B, and Hex
#21BB00 is the 20% darker color. If the color is saturated by 10%, you get
#51FA0F. If the color is desaturated by 10%, the color
#57E221 is obtained.