The hex color #a9ff1a is a light color. The web-safe version is Hex
#99FF33. A complementary color is
#5600E5. The grayscale version is
#969696. A 20% lighter version of the original color is
#DCFF4D, and Hex
#76CC00 is the 20% darker color. If the color is saturated by 10%, you get
#ABFF0E. If the color is desaturated by 10%, the color
#A7F526 is obtained.