The hex color #57a7db is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#A85824. The grayscale version is
#9E9E9E. A 20% lighter version of the original color is
#8ADAFF, and Hex
#2474A8 is the 20% darker color. If the color is saturated by 10%, you get
#50A8E1. If the color is desaturated by 10%, the color
#5EA6D5 is obtained.