The hex color #a7d42b is a light color. The web-safe version is Hex
#99CC33. A complementary color is
#582BD4. The grayscale version is
#8D8D8D. A 20% lighter version of the original color is
#DAFF5E, and Hex
#74A100 is the 20% darker color. If the color is saturated by 10%, you get
#AADB21. If the color is desaturated by 10%, the color
#A4CD35 is obtained.