The hex color #3fcdbc is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#C03243. The grayscale version is
#989898. A 20% lighter version of the original color is
#72FFEF, and Hex
#0C9A89 is the 20% darker color. If the color is saturated by 10%, you get
#36D2C0. If the color is desaturated by 10%, the color
#48C8B8 is obtained.