The hex color #136d8c is a dark color. The web-safe version is Hex
#006699. A complementary color is
#EC9273. The grayscale version is
#595959. A 20% lighter version of the original color is
#46A0BF, and Hex
#003A59 is the 20% darker color. If the color is saturated by 10%, you get
#0C6F91. If the color is desaturated by 10%, the color
#1A6B87 is obtained.