The hex color #57aec4 is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#A8513B. The grayscale version is
#989898. A 20% lighter version of the original color is
#8AE1F7, and Hex
#247B91 is the 20% darker color. If the color is saturated by 10%, you get
#50B0C8. If the color is desaturated by 10%, the color
#5EACC0 is obtained.