The hex color #b9b50f is a light color. The web-safe version is Hex
#CCCC00. A complementary color is
#464AF0. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#ECE842, and Hex
#868200 is the 20% darker color. If the color is saturated by 10%, you get
#BFBA04. If the color is desaturated by 10%, the color
#B3B01A is obtained.