The hex color #e3f7ed is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#1C0812. The grayscale version is
#EDEDED. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B0C4BA is the 20% darker color. If the color is saturated by 10%, you get
#E2F8ED. If the color is desaturated by 10%, the color
#E4F6ED is obtained.