The hex color #57d7ed is a light color. The web-safe version is Hex
#66CCFF. A complementary color is
#A82812. The grayscale version is
#B4B4B4. A 20% lighter version of the original color is
#8AFFFF, and Hex
#24A4BA is the 20% darker color. If the color is saturated by 10%, you get
#4EDBF3. If the color is desaturated by 10%, the color
#60D3E7 is obtained.