Despite being a royal color, the nobles opted not to use purple dye in their flags since it was expensive to produce. Flags and standards had to be mass-produced, and there wasn't enough dye.
Purple is one of the least used colours in vexillology and heraldry. Currently, the colour appears in only four national flags: that of Dominica, El Salvador, Spain, and Nicaragua, and one co-official national flag, the Wiphala (co-official national flag of Bolivia).
According to colour language in games, Purple indicates forbidden and unnatural magic, tainted air and water or a spreading danger which must be stopped. And it's being called 'The Colour of Corruption'.
There are 196 countries in the world today and virtually none of them have purple on their national flag. So what's wrong with purple?
Purple flag means dangerous marine life spotted.
Images of the flag can be used on clothing, as long as it's not defaced or covered, and the main symbolic elements are identifiable.
Purple – used for radiation hazards.
The reason behind this is strange. In the early days, purple was an expensive colour, due to the fact that it was made from a special kind of snail found only in the Mediterranean. In those days, tens of thousands of snails had to be killed to make one gram of purple.
During the Elizabethan era (1558 to 1603) Sumptuary Laws dictated what members of the public could and couldn't wear. Under these laws Queen Elizabeth I banned everyone but close relatives and royal family members from wearing purple.
The pink, white and green tricolour flag, or PWG, can be seen all around Newfoundland and Labrador.
Purple is the rarest colour on national flags, currently used on only 2 national flags (Dominica and Nicaragua), and historically has never been used on national flags before the 20th Century.
To make the first purple shades, dye-makers had to crush the shells of a species of sea snail, extract its purple mucus and then expose it to the sun for a specific period. The process made the colour so scarce and expensive that wearing it was a symbol of status and wealth.
The color purple's ties to kings and queens date back to ancient world, where it was prized for its bold hues and often reserved for the upper crust. The Persian king Cyrus adopted a purple tunic as his royal uniform, and some Roman emperors forbid their citizens from wearing purple clothing under penalty of death.
The original point of a flag was to be able to identify it at a distance, either in battle or at sea. For this you need bold, simple colors. Red, yellow, blue, green, black and white are the most common. More delicate shades such as pink or lavender are more likely to be misread.
In 1977 Libya broke free of the merger and became the Libyan Arab Jamahiriya. A plain green flag, the only plain coloured flag in the world, was chosen to represent Gaddafi's political philosophy.
The Color Purple by Allice Walker has been banned in schools across the United States sine 1984, just two years after the book was published. The book was banned for its sexual content and situations of abuse and domestic violence.
It's a type of chromophobia, which is a fear of colors. People with porphyrophobia may experience severe anxiety when they see or think of purple in any form, or it might be a reaction to specific shades of purple. They see the color as threatening.
Visually, purple is one of the most difficult colors to discriminate. It also has the strongest electromagnetic wavelength, being just a few wavelengths up from x-rays and gamma rays.
The Color Red Conveys Danger and Warning
Thanks to its long wavelength, red is one of the most visible colors in the color spectrum (second only to yellow). Its ability to instantly grab people's attention is the reason why it's often used to warn people of impending danger.
Consider that Oranges, Reds and Yellows are considered “exciting” or “alarming” colors while Blues, Purples and Greens are more “calm” colors.
Any person may fly the Australian National Flag. However, the flag should be treated with the respect and dignity it deserves as the nation's most important national symbol. Flag protocol is based on longstanding international and national practice.
A flag should not be flown at half-mast at night, whether or not the flag is illuminated, unless direction to half-mast the flag for an extended period of time has been issued.
The Australian National Flag, the Australian Aboriginal Flag and the Torres Strait Islander Flag can be obtained free of charge by contacting the electorate office of your local Senator or Member of the House of Representatives .