The hex color #1b38a6 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#E4C759. The grayscale version is
#535353. A 20% lighter version of the original color is
#4E6BD9, and Hex
#000573 is the 20% darker color. If the color is saturated by 10%, you get
#1535AE. If the color is desaturated by 10%, the color
#213B9E is obtained.