The hex color #4fb6b0 is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#B0494F. The grayscale version is
#929292. A 20% lighter version of the original color is
#82E9E3, and Hex
#1C837D is the 20% darker color. If the color is saturated by 10%, you get
#48BAB3. If the color is desaturated by 10%, the color
#56B2AD is obtained.