The hex color #57d09c is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#A82F63. The grayscale version is
#969696. A 20% lighter version of the original color is
#8AFFCF, and Hex
#249D69 is the 20% darker color. If the color is saturated by 10%, you get
#51D69D. If the color is desaturated by 10%, the color
#5DCA9B is obtained.