I'm looking for a pure purple, pure yellow, pure green, pure blue, pure white, pure black background image like the one below, post it. Thank you in advance!

1, purple

Purple is made of warm red and calm blue superimposed, belongs to the secondary color. In the Chinese tradition, purple is a noble color, such as the Forbidden City in Beijing, also known as the "Forbidden City", also known as the "Purple East".

2, yellow

Yellow (English: yellow) gives people a relaxed and happy, full of hope and vitality. The optical complement of yellow is blue. But traditionally painters use purple as the complementary color of yellow.

3, green

Green (green) is a common color in nature, is a color darker than the color of freshly grown grass or bright green, but also in the spectrum between yellow and green in that color.

4, white

White is a color that contains all the colors of light in the spectrum, usually considered "colorless". White has the highest luminosity and is colorless.

White light can be obtained by mixing the three primary colors of light in the spectrum: crimson, emerald green, and indigo, in certain proportions. The mixture of all visible light in the spectrum is also white light. This color represents purity in the present moment.

5. Black

Basically, black is defined as the absence of any visible light entering the visual field, which is the opposite of white, which is the simultaneous entry of all the light in the visible spectrum into the visual field.

A pigment that absorbs all visible light in the spectrum and reflects no light of any color is perceived as black by the human eye. If the pigments of the three primary colors are mixed in the right proportions to minimize the reflected color light, the human eye will also perceive it as black.

So black can be caused either by a lack of light (a dark night) or by the absorption of all color light (a black pupil).