The hex color #0f99fa is a dark color. The web-safe version is Hex
#0099FF. A complementary color is
#F06605. The grayscale version is
#8B8B8B. A 20% lighter version of the original color is
#42CCFF, and Hex
#0066C7 is the 20% darker color. If the color is saturated by 10%, you get
#039AFF. If the color is desaturated by 10%, the color
#1B98EF is obtained.