The hex color #4c84d5 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#B37B2A. The grayscale version is
#8C8C8C. A 20% lighter version of the original color is
#7FB7FF, and Hex
#1951A2 is the 20% darker color. If the color is saturated by 10%, you get
#4683DC. If the color is desaturated by 10%, the color
#5285CE is obtained.