The hex color #d6f5f5 is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#290A0A. The grayscale version is
#EBEBEB. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A3C2C2 is the 20% darker color. If the color is saturated by 10%, you get
#D4F6F6. If the color is desaturated by 10%, the color
#D8F4F4 is obtained.