The hex color #1f9c8f is a dark color. The web-safe version is Hex
#339999. A complementary color is
#E06370. The grayscale version is
#6E6E6E. A 20% lighter version of the original color is
#52CFC2, and Hex
#00695C is the 20% darker color. If the color is saturated by 10%, you get
#17A192. If the color is desaturated by 10%, the color
#27978C is obtained.