The hex color #36666c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#C99993. The grayscale version is
#585858. A 20% lighter version of the original color is
#69999F, and Hex
#033339 is the 20% darker color. If the color is saturated by 10%, you get
#33676E. If the color is desaturated by 10%, the color
#39656A is obtained.