The hex color #04b9fb is a light color. The web-safe version is Hex
#00CCFF. A complementary color is
#FB4604. The grayscale version is
#939393. A 20% lighter version of the original color is
#37ECFF, and Hex
#0086C8 is the 20% darker color. If the color is saturated by 10%, you get
#00BDFF. If the color is desaturated by 10%, the color
#12B5F1 is obtained.