Pink vs ‘Purple’

From Wikipedia,

Before we compare the colour Pink & Purple, let’s us 1st understand the difference between Spectral colour & non-spectral.

1. A spectral color is a color that is evoked by a single wavelength of light in the visible spectrum.

2. Traditional colors include: red, orange, yellow, green, blue, and violet.

3. The first division was by Newton, in his color wheel, and he used Red, Orange, Yellow, Green, Blue, Indigo and Violet

4. not spectral colours are:

• Grayscale colors, such as White, Silver, Gray, and Black
• Any color obtained by mixing a grayscale color and a spectral color, such as brown – mixture of yellow and black obtained contrast.
• Purple (similarly, magenta), which is a mixture of Blue and red

In other words, Purple & Pink are non-spectral (in accounting term, it’s call bi-product).

How to differentiate these two colours?

Pink by definition is a pale red colour. A combination of white & red.

Purple, however, is a general term for the range of shades of colour between blue & red. OR in color theory, a ‘purple’ is defined as any non-spectral color between violet & red.

Shades of violet
Amethyst	Eggplant	Fuchsia	Han purple	Heliotrope	Indigo	Lavender (floral)	Lavender	Lilac	Mauve
Periwinkle	Persian indigo	Purple	Thistle	Violet	Wisteria

Shades of pink
Amaranth	Amaranth pink	Brink pink	Carmine pink	Carnation pink	Cerise	Cerise pink	Cherry blossom pink	Coral pink	Dark pink
Deep carmine pink	Deep pink	French rose	Fuchsia	Fuchsia pink	Hollywood Cerise	Hot magenta	Hot pink	Japanese pink	Lavender pink
Lavender rose	Light thulian pink	Magenta	Medium pink	Mountbatten pink	Persian pink	Persian rose	Pink	Puce	Rose
Rose pink	Salmon pink	Shocking pink	Tea rose	Thulian pink	Ultra pink

so, in layman’s term, if the colour (in your opinion) has a little blue added in it, then it’s purple! if there isn’t any blue, it’s pink??