The hex color #e3f2fc is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#1C0D03. The grayscale version is
#F0F0F0. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B0BFC9 is the 20% darker color. If the color is saturated by 10%, you get
#E2F2FD. If the color is desaturated by 10%, the color
#E4F2FB is obtained.