The Difference Between RAL Formula Guide K5 and K7

The cr Color Chart is a commonly used standard color reference system for describing and comparing the colors of various objects. There are several series of cr Color Charts, including the K5 and K7 series, and the differences between them are as follows:

K5 Color Chart:

The K5 Color Chart is a series of cr Color Charts, also known as the K5 Classic series. It contains 213 common colors, covering a wide range of color gamut and tones, including gray, blue, green, red, yellow, orange, etc. The K5 Color Chart has a rich color selection and is suitable for a variety of application fields, such as architecture, design, printing, etc.

K7 Color Chart:

The K7 Color Chart is another series in the cr Color Chart, also known as the K7 Classic series. Compared with the K5 Color Chart, the K7 Color Chart contains more color choices, including 213 basic colors, 209 bright colors, 42 pearl colors and 70 metallic colors, for a total of 534 colors. The K7 Color Chart has a wider color range and can provide more choices, suitable for application fields with more refined color requirements.

总的来说，K5色卡和K7色卡在色彩数量和范围上存在差异。K5色卡包含213种常见色彩，适合一般的色彩比较和选择；而K7色卡则更加全面，包含了534种颜色，适用于对颜色要求较高的应用。选择使用哪种系列的RAL色卡应According to具体的应用需求和颜色选择的范围来决定。