The hex color #3fbb7e is a light color. The web-safe version is Hex
#33CC66. A complementary color is
#C04481. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#72EEB1, and Hex
#0C884B is the 20% darker color. If the color is saturated by 10%, you get
#39C17E. If the color is desaturated by 10%, the color
#45B57E is obtained.