The hex color #0f5f6c is a dark color. The web-safe version is Hex
#006666. A complementary color is
#F0A093. The grayscale version is
#494949. A 20% lighter version of the original color is
#42929F, and Hex
#002C39 is the 20% darker color. If the color is saturated by 10%, you get
#096170. If the color is desaturated by 10%, the color
#155D68 is obtained.