The hex color #4fd9af is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#B02650. The grayscale version is
#9D9D9D. A 20% lighter version of the original color is
#82FFE2, and Hex
#1CA67C is the 20% darker color. If the color is saturated by 10%, you get
#47DFB1. If the color is desaturated by 10%, the color
#57D3AD is obtained.