The hex color #0b57b5 is a dark color. The web-safe version is Hex
#0066CC. A complementary color is
#F4A84A. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#3E8AE8, and Hex
#002482 is the 20% darker color. If the color is saturated by 10%, you get
#0356BE. If the color is desaturated by 10%, the color
#1358AC is obtained.