The hex color #dff3ef is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#200C10. The grayscale version is
#EBEBEB. A 20% lighter version of the original color is
#FFFFFF, and Hex
#ACC0BC is the 20% darker color. If the color is saturated by 10%, you get
#DEF4EF. If the color is desaturated by 10%, the color
#E0F2EF is obtained.