A Guide to Know Custom Colors in Injection Molding

Color may be an extremely effective tool in the world of injection molding. It’s not just about making a thing appear nice; it’s also about communicating brand identity, guaranteeing safety, and improving usefulness. If you’re making custom-colored injection-molded parts, this blog will explain how colors are prepared for molding and help you answer the important question: What color do you need?

Essentially There Are Four Ways Color is Prepared for Molding

When it comes to custom colors in injection molding, there are primarily four methods used to achieve the desired hues:

  1. Masterbatch Colorants:
  1. How It Works: Masterbatch colorants are concentrated pellets or granules containing pigments dispersed in a carrier resin. These colorants are then mixed with the base resin during the molding process.
  1. Advantages: This method offers excellent color consistency, easy handling, and minimal effect on material properties.
  1. Considerations: You may need to work closely with your material supplier or a colorant provider to match the desired color accurately.

2. Precolored Resins:

  1. How It Works: Some resin manufacturers offer precolored resin pellets, eliminating the need for additional colorants. These resins come in a variety of shades and can be directly used in the molding process.
  1. Advantages: Precolored resins reduce the complexity of the coloration process and provide consistent results.
  1. Considerations: Limited color options and potential material restrictions might apply.

3. Dry Pigments:

  1. How It Works: Dry pigments are powders or granules that are mixed directly with the base resin during processing. This method offers flexibility in achieving custom colors.
  1. Advantages: Dry pigments offer a wide range of color options and can be blended to create unique hues.
  1. Considerations: Proper mixing and dispersion are crucial for uniform color distribution.

4. Liquid Colorants:

  1. How It Works: Liquid colorants are mixed with the base resin in liquid form. They are often used in applications where precision in color is paramount.
  1. Advantages: Liquid colorants provide excellent color accuracy and uniformity.
  1. Considerations: They may require specialized equipment for precise metering and mixing.

What Color Do You Need?

Determining the color you need involves a blend of creativity and practicality. Here are some factors to consider:

  • Brand Identity: Does the color align with your brand’s identity? Consistency in color across your product line can enhance brand recognition.
  • Aesthetics: Think about the visual appeal of the color. Does it resonate with your target audience?
  • Functionality: In some industries, color-coding is crucial for safety and functionality. Ensure that the chosen color serves a practical purpose if needed.
  • Customization: Are you looking for a unique shade that sets your product apart? Explore custom color options through color matching services.
  • Material Compatibility: Consider whether the chosen color is compatible with the material you intend to use. Some plastics may interact differently with certain colorants.


Injection molding with custom colors is a strong tool for making visually appealing and useful goods. You can obtain amazing results by learning color preparation procedures and carefully analyzing the color you require. Whether you want to improve your brand’s identity, make a market statement, or ensure safety and functionality, the world of custom colors is full with possibilities.