The hex color #4c77d3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#B3882C. The grayscale version is
#878787. A 20% lighter version of the original color is
#7FAAFF, and Hex
#1944A0 is the 20% darker color. If the color is saturated by 10%, you get
#4675DB. If the color is desaturated by 10%, the color
#5279CB is obtained.