The hex color #81c7cd is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#7E3832. The grayscale version is
#B2B2B2. A 20% lighter version of the original color is
#B4FAFF, and Hex
#4E949A is the 20% darker color. If the color is saturated by 10%, you get
#7CC9D0. If the color is desaturated by 10%, the color
#86C5CA is obtained.