The hex color #10335c is a dark color. The web-safe version is Hex
#003366. A complementary color is
#EFCCA3. The grayscale version is
#353535. A 20% lighter version of the original color is
#43668F, and Hex
#000029 is the 20% darker color. If the color is saturated by 10%, you get
#0C3360. If the color is desaturated by 10%, the color
#143358 is obtained.