The hex color #4aa7b5 is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#B5584A. The grayscale version is
#8D8D8D. A 20% lighter version of the original color is
#7DDAE8, and Hex
#177482 is the 20% darker color. If the color is saturated by 10%, you get
#43AAB9. If the color is desaturated by 10%, the color
#51A4B1 is obtained.