The hex color #4577cc is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#BA8833. The grayscale version is
#838383. A 20% lighter version of the original color is
#78AAFF, and Hex
#124499 is the 20% darker color. If the color is saturated by 10%, you get
#3F76D3. If the color is desaturated by 10%, the color
#4B78C5 is obtained.