What is Reflex Blue & Where Does It Come From?

Modified On: October 17, 2025

Reflex Blue is a Pantone color not identified by the Pantone standard three or four-digit code. It is striking, deep, and true blue, one of the most common colors chosen for branding materials.

While it doesn't have a numeric PMS code, the common Reflex Blue color equivalents are CMYK 100 / 72 / 0 / 0, RGB 0 / 59 / 157, and HEX #003B9D for the coated version (Reflex Blue C). These values make it easy to match Reflex Blue PMS tones across digital and print applications.

Where Did Reflex Blue Come From?

In the 1800s, Ault & Wilborg manufactured printing inks and pigments in Cincinnati, Ohio. They created a variety of inks and gave them different names. These inks were spectrums of reds called "U.S. Reds" and a spectrum of blues called "Reflex Blues." These colors used new technologies that expanded ink beyond the typical black ink.

Over time, the Ault & Wilborg Ink Company went out of business, and the U.S. Reds and Reflex Blues became the standardized ink systems. Pantone adopted the truest blue and kept the original name.

Why Reflex Blue Is Popular in Branding

Reflex Blue continues to be in professional branding. Its rich, saturated tone conveys reliability and authority, making it a favorite for finance, education, and healthcare industries. The color's strong visual presence helps brands stand out in print materials like custom labels, product packaging, and marketing. Many companies choose it as a primary or accent color because it prints consistently across materials.

Reflex Blue's Role in the Color System

Reflex Blue holds a special place in the professional printing and design color system. It's not technically a primary color in the traditional red-yellow-blue sense, but it is like one.

The rich blue makes it a go-to color in branding. Typically seen in industries that want to communicate trust, strength, and professionalism. As a result, many brands feature it in their color palettes.

Why is Reflex Blue considered a Spot Color?

Reflex Blue is classified as a spot color in the Pantone Matching System. Spot colors are pre-mixed to ensure precise color printing. This mix makes it an ideal choice when color accuracy is critical.

Its intense pigment delivers an eye-catching result, but also introduces challenges if not managed correctly. Reflex Blue remains a visually impactful option for brands looking to make a statement with a signature color blue.

Color Matching Challenges and Workarounds

One of its most common issues is the long drying time and difficulty in consistent digital-to-print matching. Because of its mineral-heavy pigment, Reflex Blue may appear differently on screen than in print.

Designers can manage this by using the Pantone matching system PMS. They can use spot colors in their files and request hard proofs when working with commercial printers. Using HEX or RGB approximations in digital environments can help ensure brand consistency across platforms.

What exactly is Reflex Blue?

Reflex Blue is an Alkali Blue pigment. Alkali pigments contain the mineral cobalt and are a deep color, which is why they're intense. Some printers or software have difficulty interpreting the codes used, and the reflex blue ink takes a long time to dry.

The same characteristics that give it such a rich blue color also cause the long drying time. The minerals that make up the ink are so porous that they act like little sponges.

In short, Reflex Blue is a deep, true blue color anomaly in the Pantone color numbering system. It has unique properties and history.

Posted in Label Design and Graphic Design Terminology