The hex color #a4f64a is a light color. The web-safe version is Hex
#99FF33. A complementary color is
#5B09B5. The grayscale version is
#A1A1A1. A 20% lighter version of the original color is
#D7FF7D, and Hex
#71C317 is the 20% darker color. If the color is saturated by 10%, you get
#A4FE41. If the color is desaturated by 10%, the color
#A4EE53 is obtained.