The hex color #ff99f0 is a light color. The web-safe version is Hex
#FF99FF. A complementary color is
#00660F. The grayscale version is
#D8D8D8. A 20% lighter version of the original color is
#FFCCFF, and Hex
#CC66BD is the 20% darker color. If the color is saturated by 10%, you get
#FF93F2. If the color is desaturated by 10%, the color
#FB9FEE is obtained.