The hex color #4f99a9 is a light color. The web-safe version is Hex
#669999. A complementary color is
#B06656. The grayscale version is
#868686. A 20% lighter version of the original color is
#82CCDC, and Hex
#1C6676 is the 20% darker color. If the color is saturated by 10%, you get
#4A9BAD. If the color is desaturated by 10%, the color
#5497A5 is obtained.