The hex color #56b99c is a light color. The web-safe version is Hex
#66CC99. A complementary color is
#A94663. The grayscale version is
#8E8E8E. A 20% lighter version of the original color is
#89ECCF, and Hex
#238669 is the 20% darker color. If the color is saturated by 10%, you get
#50BD9D. If the color is desaturated by 10%, the color
#5CB59B is obtained.