The hex color #37d78c is a light color. The web-safe version is Hex
#33CC99. A complementary color is
#C82873. The grayscale version is
#898989. A 20% lighter version of the original color is
#6AFFBF, and Hex
#04A459 is the 20% darker color. If the color is saturated by 10%, you get
#2FDF8C. If the color is desaturated by 10%, the color
#3FCF8C is obtained.