What is a colored system and what is an achromatic system?

Achromatic refers to white, black and various shades of gray formed by blending white and black. Color refers to red, orange, yellow, green, cyan, blue, purple and other colors.

Achromatic color system refers to white, black and various shades of gray formed by blending white and black. Achromatic colors can be arranged in a series according to certain changing rules, gradually changing from white to light gray, medium gray, dark gray to black. In colorimetry, this is called the black and white series. Achromatic colors have only one basic quality - lightness.

Color refers to colors such as red, orange, yellow, green, cyan, blue, and purple. Red, orange, yellow, green, blue, and purple tones of different brightness and purity all belong to the chromatic system. Color is determined by the wavelength and amplitude of light. The wavelength determines the hue, and the amplitude determines the hue. Colorful colors have three basic characteristics: hue, purity, and lightness. In color science, it is also called the three elements of color or the three attributes of color.

Extended information:

Color types:

1. Primary colors: The basic colors that cannot be broken down are called primary colors. Primary colors can be synthesized into other colors, but other colors cannot be restored to their original colors. There are only three primary colors. The three primary colors of light are red, green, and blue. The three primary colors of pigment are magenta (bright rose red), yellow, and cyan (lake blue).

2. Secondary color: a secondary color obtained by mixing two primary colors. There are only three secondary colors: the three secondary colors are magenta, yellow, and cyan (lake blue). They are called "complementary colors" in some color photography books, which refers to the complementary relationship on the color wheel. The three secondary colors of pigments are orange, green, and purple, also called secondary colors. It must be pointed out that the three secondary colors of light are exactly the three primary colors of the pigment.

3. Compound color: The compound color is obtained by mixing two secondary colors of a pigment or one primary color and its corresponding secondary color (red and cyan, yellow and blue, green and magenta), also known as the second color. Tertiary colors. The complex color contains all the primary color components, but the proportions between the primary colors are different, thus forming different gray tones such as red gray, yellow gray, green gray (the list is omitted here).

Baidu Encyclopedia-Color