The hex color #1a28af is a dark color. The web-safe version is Hex
#333399. A complementary color is
#E5D750. The grayscale version is
#505050. A 20% lighter version of the original color is
#4D5BE2, and Hex
#00007C is the 20% darker color. If the color is saturated by 10%, you get
#1524B8. If the color is desaturated by 10%, the color
#1F2CA6 is obtained.