The hex color #E1F3E4 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#1E0C1B. The grayscale version is
#E8E8E8. A 20% lighter version of the original color is
#FFFFFF, and Hex
#AEC0B1 is the 20% darker color. If the color is saturated by 10%, you get
#E0F4E4. If the color is desaturated by 10%, the color
#E2F2E4 is obtained.