The hex color #a6e504 is a light color. The web-safe version is Hex
#99CC00. A complementary color is
#591AFB. The grayscale version is
#858585. A 20% lighter version of the original color is
#D9FF37, and Hex
#73B200 is the 20% darker color. If the color is saturated by 10%, you get
#A9EF00. If the color is desaturated by 10%, the color
#A3DB11 is obtained.