Why Blue M&M’s Are So Difficult to Make Without Artificial Dyes

Why Blue M&M’s Are So Hard to Make

Mars is making a major change to one of America’s most recognizable candies, but recreating the familiar colors of M&M’s without synthetic food dyes has proven more complicated than expected. The biggest challenges are blue and brown, two iconic colors that will be missing from the company’s initial artificial dye-free milk chocolate M&M’s lineup.

The new version uses naturally derived coloring ingredients instead of certified synthetic food dyes. The reformulated candies are part of a broader effort by Mars to respond to changing consumer preferences and growing scrutiny of artificial food colorings in the United States. However, while the company has found alternatives for red, orange, yellow and green, reproducing the traditional blue and brown shades has presented significant manufacturing challenges.

Why Blue Is So Difficult to Recreate

One of the biggest obstacles is finding a natural ingredient that can produce the bright, recognizable blue associated with M&M’s. Unlike red and yellow, which can be recreated using ingredients such as beet juice and turmeric, naturally sourced blue pigments are more difficult to work with. Mars has explored spirulina, a blue-green algae that contains a natural pigment called phycocyanin.

Although spirulina can produce blue coloring, it creates challenges when used in large-scale candy manufacturing. Maintaining consistent color, achieving the desired brightness and ensuring the ingredient performs reliably throughout production have complicated the process.

The challenge is not simply finding something that looks blue. Mars must also develop a formulation that can be manufactured consistently in enormous quantities without changing the candy’s familiar appearance or taste.

Why Brown M&M’s Are Also Missing

Brown might seem like an easier color to reproduce because natural brown ingredients, including cocoa and caramel coloring, already exist. However, recreating the specific shade used on M&M’s is more complicated than simply adding a brown ingredient. The color must match the company’s established appearance while working within the candy’s existing manufacturing process.

Developing a reliable combination of natural pigments that produces the correct shade without synthetic dyes has proven challenging. As a result, Mars has left both colors out of the initial reformulated product rather than introduce replacements that do not meet its quality and appearance standards.

What Ingredients Are Replacing Artificial Dyes?

Mars has developed alternative color combinations using ingredients derived from natural sources. The new formulations use beet juice for red, turmeric for yellow, a combination of turmeric, beet juice and spirulina for green, and beta-carotene and carotenoids for orange.

These ingredients allow Mars to recreate several familiar candy colors without relying on certified synthetic food color additives. The company has spent years researching, testing and developing new formulations and manufacturing capabilities. Its teams have also worked to ensure the new products maintain the taste consumers expect from the original candies.

When Will Dye-Free M&M’s Be Available?

Mars introduced its artificial dye-free M&M’s in 2026, with the initial products made available through Amazon in the United States. The new milk chocolate M&M’s feature four colors: red, orange, green and yellow. Blue and brown are excluded from the initial version.

Consumers do not have to give up the original candy assortment. Traditional M&M’s containing all six familiar colors will remain available through existing product varieties. The company is continuing to investigate alternative coloring ingredients and manufacturing methods that could eventually allow it to restore blue and brown to the dye-free assortment. No confirmed release date has been established for a naturally colored version containing all six traditional colors.

Why Food Companies Are Moving Away From Artificial Dyes

The M&M’s reformulation is part of a larger shift across the American food industry. Consumers have increasingly questioned the ingredients used in packaged foods, particularly synthetic food colorings. The issue has also received increased attention from federal regulators and policymakers.

In April 2025, the U.S. Food and Drug Administration announced an initiative to work with food manufacturers to phase out petroleum-based synthetic dyes from the American food supply. The FDA identified six synthetic food color additives targeted for elimination by the end of 2027: Red 40, Yellow 5, Yellow 6, Blue 1, Blue 2 and Green 3.

The agency has also approved additional naturally derived color additives to give manufacturers more options when reformulating products. Mars is among the companies responding to changing consumer preferences and the regulatory environment, although its approach involves offering alternative products rather than immediately replacing every traditional formulation.

Will M&M’s Ever Bring Back Blue and Brown?

For now, consumers looking for artificial dye-free M&M’s will have to get used to a four-color assortment. Blue and brown are not permanently disappearing from the brand. The original six-color assortment will remain available, and Mars continues working on ways to recreate the missing shades without synthetic dyes.

The challenge highlights a larger problem facing food manufacturers: replacing artificial ingredients is not always as simple as finding something natural that looks similar. For a candy brand built around recognizable colors, even a small change can require years of research, extensive testing and significant manufacturing adjustments. Mars has managed to recreate four of its six signature colors, but blue and brown remain two major obstacles in its effort to produce M&M’s without synthetic food dyes.