The hex color #00c3a4 is a light color. The web-safe version is Hex
#00CC99. A complementary color is
#FF3C5B. The grayscale version is
#787878. A 20% lighter version of the original color is
#33F6D7, and Hex
#009071 is the 20% darker color. If the color is saturated by 10%, you get
#00CBA8. If the color is desaturated by 10%, the color
#0CBBA0 is obtained.