The hex color #cfeff5 is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#30100A. The grayscale version is
#E6E6E6. A 20% lighter version of the original color is
#FFFFFF, and Hex
#9CBCC2 is the 20% darker color. If the color is saturated by 10%, you get
#CDF0F6. If the color is desaturated by 10%, the color
#D1EEF4 is obtained.