The hex color #e3e4f5 is a light color. The web-safe version is Hex
#CCCCFF. A complementary color is
#1C1B0A. The grayscale version is
#E9E9E9. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B0B1C2 is the 20% darker color. If the color is saturated by 10%, you get
#E2E3F6. If the color is desaturated by 10%, the color
#E4E5F4 is obtained.