The hex color #1f8f9f is a dark color. The web-safe version is Hex
#339999. A complementary color is
#E07060. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#52C2D2, and Hex
#005C6C is the 20% darker color. If the color is saturated by 10%, you get
#1792A4. If the color is desaturated by 10%, the color
#278C9A is obtained.