The hex color #103658 is a dark color. The web-safe version is Hex
#003366. A complementary color is
#EFC9A7. The grayscale version is
#353535. A 20% lighter version of the original color is
#43698B, and Hex
#000325 is the 20% darker color. If the color is saturated by 10%, you get
#0C365C. If the color is desaturated by 10%, the color
#143654 is obtained.