The hex color #adda11 is a light color. The web-safe version is Hex
#99CC00. A complementary color is
#5225EE. The grayscale version is
#888888. A 20% lighter version of the original color is
#E0FF44, and Hex
#7AA700 is the 20% darker color. If the color is saturated by 10%, you get
#B1E205. If the color is desaturated by 10%, the color
#A9D21D is obtained.