The hex color #f3f5e5 is a light color. The web-safe version is Hex
#FFFFCC. A complementary color is
#0C0A1A. The grayscale version is
#EFEFEF. A 20% lighter version of the original color is
#FFFFFF, and Hex
#C0C2B2 is the 20% darker color. If the color is saturated by 10%, you get
#F3F6E4. If the color is desaturated by 10%, the color
#F3F4E6 is obtained.