The hex color #c4ffdf is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#3B0020. The grayscale version is
#E1E1E1. A 20% lighter version of the original color is
#F7FFFF, and Hex
#91CCAC is the 20% darker color. If the color is saturated by 10%, you get
#C1FFDF. If the color is desaturated by 10%, the color
#C7FCDF is obtained.