The hex color #d4e3e5 is a light color. The web-safe version is Hex
#CCCCCC. A complementary color is
#2B1C1A. The grayscale version is
#DFDFDF. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A1B0B2 is the 20% darker color. If the color is saturated by 10%, you get
#D3E3E6. If the color is desaturated by 10%, the color
#D5E3E4 is obtained.