The hex color #04cfe0 is a light color. The web-safe version is Hex
#00CCCC. A complementary color is
#FB301F. The grayscale version is
#919191. A 20% lighter version of the original color is
#37FFFF, and Hex
#009CAD is the 20% darker color. If the color is saturated by 10%, you get
#00D5E8. If the color is desaturated by 10%, the color
#12C9D8 is obtained.