The hex color #3fd26e is a light color. The web-safe version is Hex
#33CC66. A complementary color is
#C02D91. The grayscale version is
#808080. A 20% lighter version of the original color is
#72FFA1, and Hex
#0C9F3B is the 20% darker color. If the color is saturated by 10%, you get
#39DA6C. If the color is desaturated by 10%, the color
#45CA70 is obtained.