The hex color #1b53ab is a dark color. The web-safe version is Hex
#336699. A complementary color is
#E4AC54. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#4E86DE, and Hex
#002078 is the 20% darker color. If the color is saturated by 10%, you get
#1452B3. If the color is desaturated by 10%, the color
#2254A3 is obtained.