The hex color #fdffc3 is a light color. The web-safe version is Hex
#FFFFCC. A complementary color is
#02003C. The grayscale version is
#EAEAEA. A 20% lighter version of the original color is
#FFFFF6, and Hex
#CACC90 is the 20% darker color. If the color is saturated by 10%, you get
#FFFFBF. If the color is desaturated by 10%, the color
#FBFDC7 is obtained.