The hex color #fdd40c is a light color. The web-safe version is Hex
#FFCC00. A complementary color is
#022BF3. The grayscale version is
#9F9F9F. A 20% lighter version of the original color is
#FFFF3F, and Hex
#CAA100 is the 20% darker color. If the color is saturated by 10%, you get
#FFD900. If the color is desaturated by 10%, the color
#F4CF1B is obtained.