The hex color #e3f0d5 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#1C0F2A. The grayscale version is
#E3E3E3. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B0BDA2 is the 20% darker color. If the color is saturated by 10%, you get
#E3F1D4. If the color is desaturated by 10%, the color
#E3EFD6 is obtained.