The hex color #addcc1 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#52233E. The grayscale version is
#C3C3C3. A 20% lighter version of the original color is
#E0FFF4, and Hex
#7AA98E is the 20% darker color. If the color is saturated by 10%, you get
#ABDEC1. If the color is desaturated by 10%, the color
#AFDAC1 is obtained.