The hex color #57aca7 is a light color. The web-safe version is Hex
#669999. A complementary color is
#A85358. The grayscale version is
#8E8E8E. A 20% lighter version of the original color is
#8ADFDA, and Hex
#247974 is the 20% darker color. If the color is saturated by 10%, you get
#52AFAA. If the color is desaturated by 10%, the color
#5DA9A5 is obtained.