The hex color #0b646f is a dark color. The web-safe version is Hex
#006666. A complementary color is
#F49B90. The grayscale version is
#4A4A4A. A 20% lighter version of the original color is
#3E97A2, and Hex
#00313C is the 20% darker color. If the color is saturated by 10%, you get
#056773. If the color is desaturated by 10%, the color
#11616B is obtained.