RoastLΔB

A free way to identify the roast level of coffee beans from a photo.
RoastLΔB by First Chair Coffee Roasters is a free online coffee roast analyzer that uses color-science to detect roast level, from light roast and City to Full City, Vienna, and French. Simply upload a photo of your roasted coffee beans and the tool instantly calculates the closest roast category using advanced ΔE LAB color matching.

Includes optional one-tap calibration for improved accuracy using plain printer paper or any neutral background. Ideal for home roasters, small-batch roasters, and anyone wanting a quick, reliable way to evaluate roast color without expensive equipment