The hex color #506f7c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#AF9083. The grayscale version is
#696969. A 20% lighter version of the original color is
#83A2AF, and Hex
#1D3C49 is the 20% darker color. If the color is saturated by 10%, you get
#4E707E. If the color is desaturated by 10%, the color
#536E7A is obtained.