The hex color #3ea28f is a light color. The web-safe version is Hex
#339999. A complementary color is
#C15D70. The grayscale version is
#7A7A7A. A 20% lighter version of the original color is
#71D5C2, and Hex
#0B6F5C is the 20% darker color. If the color is saturated by 10%, you get
#38A691. If the color is desaturated by 10%, the color
#449E8D is obtained.