Color [color] Field for Product Feed

Required for apparel & accessories (Google & ChatGPT)

The color attribute describes your product’s color(s) and helps Google create accurate filters so shoppers can refine search results. If your product has color variants, include this attribute for each variant.

When to use

• Required for free listings for all Apparel Accessories (ID:166) products.
• Required for Shopping ads for Apparel Accessories (ID:166) in Brazil, France, Germany, Japan, United Kingdom, United States.
• Optional for other product categories but recommended if color is relevant.

Format

Follow these guidelines so Google can correctly interpret your color data.

• Type: String (Alphanumeric, Unicode; ASCII recommended)
• Limits:
  • 1–100 characters total
  • 1–40 characters per individual color
• Repeated field: No
• Schema.org property: Product.color

File format examples:

Multi-color format:

• Up to 3 colors allowed, separated by a slash /: Red/Green/Black
• Do not separate with commas.
• Do not merge into one word (RedGreenBlack).

Minimum requirements

• Submit the color exactly as shown on your landing page.
• Use the same value for all variants that share the same item_group_id.
• Include up to 3 colors (primary + up to 2 secondary), separated by /.
• Do not use commas, numbers only, HTML color codes (e.g., #fff000), single letters (except valid single-character colors in CJK languages), or generic terms like variety or N/A.
• Do not reference the product or image (see image).

SEO Tip

Match the standard color name customers are likely to search for in your title and color attribute. For example, if your product page says “Cinnamon Apple Dress”, consider using Red in the title and keeping “Cinnamon Apple” in the color field for accuracy.

For precious metals, also use the material attribute alongside color (e.g., Gold + material: gold).

Official Source : https://support.google.com/merchants/answer/6324487