The hex color #5fe2f1 is a light color. The web-safe version is Hex
#66CCFF. A complementary color is
#A01D0E. The grayscale version is
#BBBBBB. A 20% lighter version of the original color is
#92FFFF, and Hex
#2CAFBE is the 20% darker color. If the color is saturated by 10%, you get
#56E6F6. If the color is desaturated by 10%, the color
#68DEEC is obtained.