The hex color #a0e21d is a light color. The web-safe version is Hex
#99CC33. A complementary color is
#5F1DE2. The grayscale version is
#8A8A8A. A 20% lighter version of the original color is
#D3FF50, and Hex
#6DAF00 is the 20% darker color. If the color is saturated by 10%, you get
#A2EB12. If the color is desaturated by 10%, the color
#9ED928 is obtained.