The hex color #a7dd54 is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#5822AB. The grayscale version is
#9D9D9D. A 20% lighter version of the original color is
#DAFF87, and Hex
#74AA21 is the 20% darker color. If the color is saturated by 10%, you get
#A8E34D. If the color is desaturated by 10%, the color
#A6D75B is obtained.