The hex color #559efc is a light color. The web-safe version is Hex
#6699FF. A complementary color is
#AA6103. The grayscale version is
#A5A5A5. A 20% lighter version of the original color is
#88D1FF, and Hex
#226BC9 is the 20% darker color. If the color is saturated by 10%, you get
#4D9DFF. If the color is desaturated by 10%, the color
#5D9FF3 is obtained.