The hex color #e4f2f3 is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#1B0D0C. The grayscale version is
#EEEEEE. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B1BFC0 is the 20% darker color. If the color is saturated by 10%, you get
#E3F2F4. If the color is desaturated by 10%, the color
#E5F2F2 is obtained.