The hex color #a4e54d is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#5B1AB2. The grayscale version is
#9D9D9D. A 20% lighter version of the original color is
#D7FF80, and Hex
#71B21A is the 20% darker color. If the color is saturated by 10%, you get
#A5EC45. If the color is desaturated by 10%, the color
#A3DE55 is obtained.