The hex color #12687c is a dark color. The web-safe version is Hex
#006666. A complementary color is
#ED9783. The grayscale version is
#525252. A 20% lighter version of the original color is
#459BAF, and Hex
#003549 is the 20% darker color. If the color is saturated by 10%, you get
#0C6A80. If the color is desaturated by 10%, the color
#186678 is obtained.