The Journal/The Chromatic Energy Index: Why Every Color Has a Number
The Journal · Chromatic Energy & Color

The Chromatic Energy Index: why every color has a number

By L. L. Ingram III · August 2026 · 7 min read

Walk into a room painted powder blue and your shoulders drop. Walk into the same room painted signal red and your pulse doesn't ask permission. Designers have always known this by feel. We wanted a number.

Chromatic Energy (CE)™ is a 0–10 score for how much energy a color carries in a space — from deeply restful at the bottom of the scale to fully electric at the top. It is produced by our proprietary Chromatic Energy Index, which weighs the physics of a color against the psychology of how people actually respond to it, across twenty-four hue families.

CE 3.4
"Grounded, Botanical"
Sage · sampled in Color Resonance™

Feel, measured

The Index separates a color into the parts that actually do the work. Its hue family carries the character — the documented associations people bring to a blue that they never bring to an orange. Its chroma, or purity, decides how much of that character is present at all: a whisper of sage and a saturated emerald belong to the same family but do not speak at the same volume. And its value — how light or dark it sits — behaves asymmetrically in a way that surprised even us: darkness contributes its own weight to a color's energy, while lightness adds nothing.

The scale wasn't assembled from theory alone. The model's constants were measured — calibrated against more than a hundred direct judgments of real colors on a 0–10 scale, until the number agreed with a trained eye to within roughly half a point. For context, when the same colors were judged twice in different settings, the judgments themselves differed by a third of a point. The model tracks the eye nearly as closely as the eye tracks itself.

Sample a color, build a palette, and trust the number.

What your room's number means

A single wall never acts alone, so the Index doesn't stop at single colors. When we compose a palette, each color's CE is weighted by its share of the room — a body color speaks far louder than an accent — and then adjusted for how the hues sit together: analogous colors settle a scheme slightly, complementary ones raise it. The result is a palette-level reading, from Calming through Balanced and Energizing to Highly Stimulating.

That number is where every Chromatica™ consultation begins. It tells us whether the bedroom you want to rest in is quietly working against you, and whether the studio that should spark ideas has been whispering instead. In a Color Resonance™ session we sample your colors, score them, and show you your own rooms rendered in the palette — before a single brush is lifted.

Color has always had a feel. Now it has a number, and the number has a method.

L. L. Ingram III
Founder, I PAINT CO. · 35+ years painting · Lic. #1101009
Curious what your walls are saying?

The number, in the app

A palette totalled in Color Resonance A color sampled from a photograph of a room

Five real Benjamin Moore colors — White Dove OC-17, Edgecomb Gray HC-173, Saybrook Sage HC-114, Hale Navy HC-154, Baked Terra Cotta 1202 — scored one at a time, then together as one scheme. The scheme comes back at 4.54: balanced, with enough contrast to stay interesting. That number is the difference between hoping a room will feel right and knowing it will.

Find your palette's number

Every Chromatica™ consultation includes a Color Resonance™ session — your space, your colors, scored and seen before work begins.

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