The hex color #4e757c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#B18A83. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#81A8AF, and Hex
#1B4249 is the 20% darker color. If the color is saturated by 10%, you get
#4B767E. If the color is desaturated by 10%, the color
#51747A is obtained.