The hex color #fdf9f2 is a light color. The web-safe version is Hex
#FFFFFF. A complementary color is
#02060D. The grayscale version is
#F8F8F8. A 20% lighter version of the original color is
#FFFFFF, and Hex
#CAC6BF is the 20% darker color. If the color is saturated by 10%, you get
#FEF9F1. If the color is desaturated by 10%, the color
#FDF9F3 is obtained.