The hex color #1c75b3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E38A4C. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#4FA8E6, and Hex
#004280 is the 20% darker color. If the color is saturated by 10%, you get
#1476BA. If the color is desaturated by 10%, the color
#2474AC is obtained.