The hex color #12546c is a dark color. The web-safe version is Hex
#006666. A complementary color is
#EDAB93. The grayscale version is
#464646. A 20% lighter version of the original color is
#45879F, and Hex
#002139 is the 20% darker color. If the color is saturated by 10%, you get
#0D5570. If the color is desaturated by 10%, the color
#175368 is obtained.