The hex color #1b5bb7 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E4A448. The grayscale version is
#646464. A 20% lighter version of the original color is
#4E8EEA, and Hex
#002884 is the 20% darker color. If the color is saturated by 10%, you get
#145ABF. If the color is desaturated by 10%, the color
#225CAF is obtained.