The hex color #a9df4f is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#5620B0. The grayscale version is
#9D9D9D. A 20% lighter version of the original color is
#DCFF82, and Hex
#76AC1C is the 20% darker color. If the color is saturated by 10%, you get
#AAE647. If the color is desaturated by 10%, the color
#A8D857 is obtained.