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2. List of reagent testing color charts - Wikipedia

   en.wikipedia.org/wiki/List_of_reagent_testing...

   It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]

3. Color chart - Wikipedia

   en.wikipedia.org/wiki/Color_chart

   Color chips or color samples from a plastic pellet manufacturer that enables customers to evaluate the color range as molded objects to see final effects. A color chart or color reference card is a flat, physical object that has many different color samples present. They can be available as a single-page chart, or in the form of swatchbooks or ...

4. List of monochrome and RGB color formats - Wikipedia

   en.wikipedia.org/wiki/List_of_monochrome_and_RGB...

   For each unique palette, an image color test chart and sample image (truecolor original follows) rendered with that palette (without dithering) are given. The test chart shows the full 256 levels of the red, green, and blue (RGB) primary colors and cyan, magenta, and yellow complementary colors, along with a full 256-level grayscale.

5. Redken - Wikipedia

   en.wikipedia.org/wiki/Redken

   The company was founded in 1960 by Jheri Redding and Paula Kent, thus the name, "Red-ken."Redken pioneered the "Scientific Approach to Beauty," and revolutionized the professional salon business by introducing the concept of protein reconditioning and developing new protein based products, which they patented.

6. List of colors: A–F - Wikipedia

   en.wikipedia.org/wiki/List_of_colors:_A–F

   This is an accepted version of this page This is the latest accepted revision, reviewed on 11 January 2025. Colors are an important part of visual arts, fashion, interior design, and many other fields and disciplines. The following is a list of colors. A number of the color swatches below are taken from domain-specific naming schemes such as X11 or HTML4. RGB values are given for each swatch ...

7. Color wheel - Wikipedia

   en.wikipedia.org/wiki/Color_wheel

   A color wheel or color circle [1] is an abstract illustrative organization of color hues around a circle, which shows the relationships between primary colors, secondary colors, tertiary colors etc. Some sources use the terms color wheel and color circle interchangeably; [ 2 ] [ 3 ] however, one term or the other may be more prevalent in ...

8. ColorChecker - Wikipedia

   en.wikipedia.org/wiki/ColorChecker

   The ColorChecker Classic chart is a rectangular card measuring about 11 by 8.25 inches (27.9 by 21.0 cm), or in its original incarnation about 13 by 9 inches (33 by 23 cm), an aspect ratio approximately the same as that of 35 mm film. [5]

9. Ostwald color system - Wikipedia

   en.wikipedia.org/wiki/Ostwald_color_system

   The Color Harmony Manuals were published beginning in 1942, and have been out of print since 1972. [2] Ostwald's first Color Harmony Manual was a set of 12 handbooks showing complementary hues. The first edition was published in 1942. It contained 680 color chips. Each color chip was a 5/8 inch square and had a tab where the Ostwald notation ...