The hex color #b9c40e is a light color. The web-safe version is Hex
#CCCC00. A complementary color is
#463BF1. The grayscale version is
#848484. A 20% lighter version of the original color is
#ECF741, and Hex
#869100 is the 20% darker color. If the color is saturated by 10%, you get
#BECA02. If the color is desaturated by 10%, the color
#B4BE1A is obtained.