The hex color #04d4f0 is a light color. The web-safe version is Hex
#00CCFF. A complementary color is
#FB2B0F. The grayscale version is
#989898. A 20% lighter version of the original color is
#37FFFF, and Hex
#00A1BD is the 20% darker color. If the color is saturated by 10%, you get
#00DAF9. If the color is desaturated by 10%, the color
#13CEE7 is obtained.