The hex color #65efcc is a light color. The web-safe version is Hex
#66FFCC. A complementary color is
#9A1033. The grayscale version is
#B5B5B5. A 20% lighter version of the original color is
#98FFFF, and Hex
#32BC99 is the 20% darker color. If the color is saturated by 10%, you get
#5DF5CE. If the color is desaturated by 10%, the color
#6DE9CA is obtained.