The hex color #579ddc is a light color. The web-safe version is Hex
#6699CC. A complementary color is
#A86223. The grayscale version is
#9B9B9B. A 20% lighter version of the original color is
#8AD0FF, and Hex
#246AA9 is the 20% darker color. If the color is saturated by 10%, you get
#509DE3. If the color is desaturated by 10%, the color
#5E9DD5 is obtained.