In the matching cards below, white lettering works on teal, while turquoise needs darker text. The shapes stay the same, so the change in color is easy to compare.

Matching Teal and Turquoise cards with white and dark lettering.

For a layout using both, try a turquoise detail against a teal field and keep the lettering neutral. These swatches use the CSS named colors; paint and fabric with the same names may look different.