The hex color #e4c83d is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#1B37C2. The grayscale version is
#A3A3A3. A 20% lighter version of the original color is
#FFFB70, and Hex
#B1950A is the 20% darker color. If the color is saturated by 10%, you get
#EBCC33. If the color is desaturated by 10%, the color
#DEC447 is obtained.