The hex color #56b1b9 is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#A94E46. The grayscale version is
#959595. A 20% lighter version of the original color is
#89E4EC, and Hex
#237E86 is the 20% darker color. If the color is saturated by 10%, you get
#50B4BD. If the color is desaturated by 10%, the color
#5CAEB5 is obtained.