The hex color #57d19e is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#A82E61. The grayscale version is
#979797. A 20% lighter version of the original color is
#8AFFD1, and Hex
#249E6B is the 20% darker color. If the color is saturated by 10%, you get
#51D79F. If the color is desaturated by 10%, the color
#5DCB9D is obtained.