The hex color #A8C156 is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#573EA9. The grayscale version is
#959595. A 20% lighter version of the original color is
#DBF489, and Hex
#758E23 is the 20% darker color. If the color is saturated by 10%, you get
#AAC550. If the color is desaturated by 10%, the color
#A6BD5C is obtained.