The hex color #f9dd2e is a light color. The web-safe version is Hex
#FFCC33. A complementary color is
#0622D1. The grayscale version is
#ACACAC. A 20% lighter version of the original color is
#FFFF61, and Hex
#C6AA00 is the 20% darker color. If the color is saturated by 10%, you get
#FFE221. If the color is desaturated by 10%, the color
#F1D83B is obtained.