Teal (common colour name)Green (Hue) with medium through dark (Lit) and weak through moderate (Sat) with a tinge of blue (bluish green or blue-green) resembling the colour of the wing feathers of the teal (Nettion carolinense), a small duck native to the continental U.S. In the diamond trade, the name teal is usually applied to blue-green (B-G) and green-blue (G-B) hues of a bright tone although teal can be applied to a range of bluish green (b-G) through greenish blue (g-B) hues that exhibit dull or deep tones.