You don’t need to own or drive a vehicle to register for this concession. You can register up to 2 vehicles that you normally use for travelling in central London. Getting its name from the Periwinkle flower, it’s a lighter tone of blue that is often considered to be a lavender blue. Do not assume you can always park for free. The London boroughs of Kensington & Chelsea, the City of Westminster, the City of London and part of the London Borough of Camden

You should not use the badge to allow non-disabled people to take advantage of the benefits while you sit in the car. Anything with “electric” in its name promises to be a little bit more vibrant than the rest of its peers, and Electric Indigo certainly doesn’t disappoint. Despite having a definite purple tone to it, Electric Indigo is brighter, more vivid, and humming with energy. The term blue generally describes colors perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. [12] Blues with a higher frequency and thus a shorter wavelength gradually look more violet, while those with a lower frequency and a longer wavelength gradually appear more green. Purer blues are in the middle of this range, e.g., around 470 nanometres. Goda, Makoto; Fujii, Ryozo (1995). "Blue Chromatophores in Two Species of Callionymid Fish". Zoological Science. 12 (6): 811–813. doi: 10.2108/zsj.12.811. S2CID 86385679.

Automotive urea, in case you were wondering, is not an animal derived product although we do excrete urea in urine, it's at much lower concentrations. The stuff used in your car is a man-made substance created by exposing synthetic ammonia and carbon dioxide to heat. As well as being used in liquid form, AdBlue suppliers also make dry pellets for farmers to scatter on their fields as a form of fertiliser. How to use AdBlue

The official color of the University of Oxford in the UK, Oxford Blue is a bold, dramatic blue tone that has been a part of the university’s branding since 1829.In 1748, the Royal Navy adopted a dark shade of blue for the uniform of officers. [76] It was first known as marine blue, now known as navy blue. [81] The militia organized by George Washington selected blue and buff, the colours of the British Whig Party. Blue continued to be the colour of the field uniform of the US Army until 1902, and is still the colour of the dress uniform. [82] Carolina blue is a shade of blue that is used as the official school colors of the University of North Carolina, a place where Carolina blue is also referred to as Tar Heel blue.