The hex color #e3e3f2 is a light color. The web-safe version is Hex
#CCCCFF. A complementary color is
#1C1C0D. The grayscale version is
#E8E8E8. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B0B0BF is the 20% darker color. If the color is saturated by 10%, you get
#E3E3F3. If the color is desaturated by 10%, the color
#E4E4F1 is obtained.