The hex color #10d9a6 is a light color. The web-safe version is Hex
#00CC99. A complementary color is
#EF2659. The grayscale version is
#858585. A 20% lighter version of the original color is
#43FFD9, and Hex
#00A673 is the 20% darker color. If the color is saturated by 10%, you get
#04E1A9. If the color is desaturated by 10%, the color
#1CD1A3 is obtained.