Why Is an "Endless Dream" Always Purple?

If someone said the words "an endless dream" to you, what would be the first color that came to mind?

Recently, in a small color survey we ran at shikisai101, over 350 people answered exactly this question. One color pulled far ahead of all the others.

Purple.

Deep purple, pale purple, blue-violet, lavender, violet, wisteria, mauve, grayish purple—the descriptions varied, but nearly forty percent of respondents picked some shade of "purple." Blue tones (blue, indigo, navy, ultramarine) came in second, followed by gray, black, white, and pink.

What's even more interesting are the reasons people who chose purple wrote down.

"A sense of mystery, of the unknown."
"The borderline between reality and unreality."
"Romantic." "Fleeting." "Ambiguous." "Mysterious."
"The color of the sky just before dawn."

It doesn't feel like coincidence that so many similar words appeared. In fact, of the 138 people who chose purple, 32 used some form of "boundary," "in-between," or "threshold" in their free-response comments; 41 used words like "mysterious," "mystical," or "enigmatic"; and 27 used words like "fleeting," "ambiguous," or "hazy."

Purple Always Lives "In Between"

Purple has one defining characteristic: it can only be made by mixing red and blue, the two ends of the visible spectrum. Among the seven colors of the rainbow, purple alone is the color that appears when you connect the two extremes.

Perhaps that's why purple, across cultures and across centuries, has always been placed in liminal spaces.
In the sky between morning and night.
In ritual garments worn between life and death.
In the drowsy haze between waking and dreaming.

Before dawn—those few minutes when the sky is still anchored in deep blue, yet a faint trace of red begins to glow at the eastern edge. In Japan, this is called kawatare-doki ("the hour when you can't tell who's who"); in France, l'heure bleue ("the blue hour"). It may be in precisely this "boundary time" that the sky comes closest to true purple.

One survey response put it this way:

"The blue moment between night and morning. So beautiful it feels unreal. It reminds me of the border between reality and dreams."

People who chose purple were likely picturing "the endless dream" overlaid onto this exact time—neither full darkness nor full waking, but the pale half-light between night and morning that hasn't yet earned a name.

Ambiguity Is Painted by Saturation

Let's bring in a color-theory perspective.

When describing the color of an "endless dream," people often reached for slightly twisted phrases: "pale purple," "muted purple," "lavender gray," "blue-ashen gray." This may not be accidental.

In fact, about 70% of the purple responses (97 out of 138) included a modifier that lowered saturation—words like "pale," "muted," "soft," or "grayish." Those who answered with a vivid, pure purple were actually in the minority.

Color has three attributes: hue, lightness, and saturation. Of these, the "dreamlike" quality seems to come mainly from saturation.

When you mix white or gray into a pure hue, you produce what PCCS (Practical Color Co-ordinate System) calls the lt (light), ltg (light grayish), and g (grayish) tones. Soft, blurred colors seem to ask the brain to suspend judgment—and so we end up projecting onto them things that haven't quite happened, or haven't quite ended.

Some respondents read purple as "a nightmare." Others read it as "romantic." The same color can swing either way depending on the viewer's mood. This is perhaps why purple is called the color of boundaries: because it holds both the passion of red and the stillness of blue inside itself, it can show a different face every time.

Between "Endless" and "Dream"

The second-most-chosen color family was blue and indigo (79 responses, 22.1%).

"The image of deep sleep." "Night sky." "The universe." "A sea with no end."

These answers seem pulled toward the "endless" half of the phrase. Depth, distance, the inability to escape—all expressed through the coolness of blue.

Conversely, people who chose pink, white, or soft pastels (46 in total, 12.9%) placed their weight on the "dream" half.

"Because I thought it was a good dream I didn't want to wake from."
"The color of air I'd want to drift through forever, like spring sunshine."

And people who chose purple may have been folding both halves into a single word. "Endless" (dark, closed) and "dream" (bright, floating)—purple sits at the exact midpoint between these two opposing pulls.

Afterglow

When we think about color, we tend to lift a single hue out of context and ask, "What color is this?" But what's really fascinating may be the relationship—which words a color is sitting next to.

Between "endless" and "dream," there was purple.
Between "before dawn" and "morning," there is also purple.
Perhaps it's in the moments when our hearts don't tilt either way that we summon purple to us.

References

• shikisai101 Color Mini-Survey (#46): "What color do you associate with an endless dream?" (Conducted May 2026, 357 valid responses)
• Chromaterra — Record the color of your day
• Japan Color Research Institute, PCCS (Practical Color Co-ordinate System) tone classification