The hex color #e3f2c2 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#1C0D3D. The grayscale version is
#DDDDDD. A 20% lighter version of the original color is
#FFFFF5, and Hex
#B0BF8F is the 20% darker color. If the color is saturated by 10%, you get
#E4F4BF. If the color is desaturated by 10%, the color
#E2F0C5 is obtained.