The hex color #a8e77b is a light color. The web-safe version is Hex
#99FF66. A complementary color is
#571884. The grayscale version is
#AEAEAE. A 20% lighter version of the original color is
#DBFFAE, and Hex
#75B448 is the 20% darker color. If the color is saturated by 10%, you get
#A7ED76. If the color is desaturated by 10%, the color
#A9E180 is obtained.