The hex color #3fd4ab is a light color. The web-safe version is Hex
#33CC99. A complementary color is
#C02B54. The grayscale version is
#959595. A 20% lighter version of the original color is
#72FFDE, and Hex
#0CA178 is the 20% darker color. If the color is saturated by 10%, you get
#36DAAD. If the color is desaturated by 10%, the color
#48CEA9 is obtained.