The hex color #e3fdfe is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#1C0201. The grayscale version is
#F5F5F5. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B0CACB is the 20% darker color. If the color is saturated by 10%, you get
#E1FEFF. If the color is desaturated by 10%, the color
#E5FCFD is obtained.