The hex color #65ffd8 is a light color. The web-safe version is Hex
#66FFCC. A complementary color is
#9A0027. The grayscale version is
#BFBFBF. A 20% lighter version of the original color is
#98FFFF, and Hex
#32CCA5 is the 20% darker color. If the color is saturated by 10%, you get
#5CFFDB. If the color is desaturated by 10%, the color
#6EF9D5 is obtained.