The hex color #fedf10 is a light color. The web-safe version is Hex
#FFCC00. A complementary color is
#0120EF. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#FFFF43, and Hex
#CBAC00 is the 20% darker color. If the color is saturated by 10%, you get
#FFE501. If the color is desaturated by 10%, the color
#F5D91F is obtained.