The hex color #5ef0f2 is a light color. The web-safe version is Hex
#66FFFF. A complementary color is
#A10F0D. The grayscale version is
#C0C0C0. A 20% lighter version of the original color is
#91FFFF, and Hex
#2BBDBF is the 20% darker color. If the color is saturated by 10%, you get
#54F5F7. If the color is desaturated by 10%, the color
#68EBED is obtained.