The hex color #57a0d0 is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#A85F2F. The grayscale version is
#989898. A 20% lighter version of the original color is
#8AD3FF, and Hex
#246D9D is the 20% darker color. If the color is saturated by 10%, you get
#51A1D6. If the color is desaturated by 10%, the color
#5D9FCA is obtained.