Gules

Gules is the heraldic tincture for red. It is one of the five main colours in heraldry. In black and white engravings it is shown with vertical lines. The origin of the word is uncertain, though modern French uses gueules for the mouth of an animal.

Red fields appear in some of the best known arms in Europe. England is Gules, three lions passant guardant in pale Or. Austria is Gules, a fess argent, a red shield with a white band across the middle. The Neville family bore Gules, a saltire argent. Each one pairs the red colour with a metal, as the rule of tincture asks.

In the coat of arms maker, click any part of the shield and choose Gules by name. Sanguine and Murrey, two darker reds, sit further down the list if you want a deeper shade, though they are much rarer in real arms.