The hex color #a3d55e is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#5C2AA1. The grayscale version is
#9D9D9D. A 20% lighter version of the original color is
#D6FF91, and Hex
#70A22B is the 20% darker color. If the color is saturated by 10%, you get
#A4DB58. If the color is desaturated by 10%, the color
#A2CF64 is obtained.