The hex color #1a57bf is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E5A840. The grayscale version is
#656565. A 20% lighter version of the original color is
#4D8AF2, and Hex
#00248C is the 20% darker color. If the color is saturated by 10%, you get
#1256C8. If the color is desaturated by 10%, the color
#2258B6 is obtained.