The hex color #e1f4e3 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#1E0B1C. The grayscale version is
#E8E8E8. A 20% lighter version of the original color is
#FFFFFF, and Hex
#AEC1B0 is the 20% darker color. If the color is saturated by 10%, you get
#E0F5E3. If the color is desaturated by 10%, the color
#E2F3E4 is obtained.