The hex color #3fae4c is a light color. The web-safe version is Hex
#339933. A complementary color is
#C051B3. The grayscale version is
#686868. A 20% lighter version of the original color is
#72E17F, and Hex
#0C7B19 is the 20% darker color. If the color is saturated by 10%, you get
#3BB549. If the color is desaturated by 10%, the color
#43A74F is obtained.