The hex color #133a8c is a dark color. The web-safe version is Hex
#003399. A complementary color is
#ECC573. The grayscale version is
#484848. A 20% lighter version of the original color is
#466DBF, and Hex
#000759 is the 20% darker color. If the color is saturated by 10%, you get
#0E3993. If the color is desaturated by 10%, the color
#183B85 is obtained.