The hex color #3dbba3 is a light color. The web-safe version is Hex
#33CC99. A complementary color is
#C2445C. The grayscale version is
#898989. A 20% lighter version of the original color is
#70EED6, and Hex
#0A8870 is the 20% darker color. If the color is saturated by 10%, you get
#35C0A6. If the color is desaturated by 10%, the color
#45B6A0 is obtained.