The hex color #b5e40d is a light color. The web-safe version is Hex
#CCCC00. A complementary color is
#4A1BF2. The grayscale version is
#8D8D8D. A 20% lighter version of the original color is
#E8FF40, and Hex
#82B100 is the 20% darker color. If the color is saturated by 10%, you get
#B9ED00. If the color is desaturated by 10%, the color
#B1DB1A is obtained.