The hex color #57a4db is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#A85B24. The grayscale version is
#9D9D9D. A 20% lighter version of the original color is
#8AD7FF, and Hex
#2471A8 is the 20% darker color. If the color is saturated by 10%, you get
#50A5E1. If the color is desaturated by 10%, the color
#5EA3D5 is obtained.