The hex color #3DFDB5 is a light color. The web-safe version is Hex
#33FFCC. A complementary color is
#C2024A. The grayscale version is
#A5A5A5. A 20% lighter version of the original color is
#70FFE8, and Hex
#0ACA82 is the 20% darker color. If the color is saturated by 10%, you get
#33FFB7. If the color is desaturated by 10%, the color
#47F4B3 is obtained.