# Neo-Impressionism (新印象主義)

> A method that replaced Impressionist intuition with optical theory, setting down dots of unmixed pure colour to be blended on the retina. The discipline of Divisionism and Pointillism tackled, in advance, the same problems as later halftone printing, mosaic and pixel-based image construction.

- IndexStyle No.466 — https://indexstyle.org/styles/neo-impressionism
- Kind: Style · Family: Perceptual Art · Era: 1886–1900
- Mood: Technology, Trust, Calm
- Color cues: #e9e6dd / #67635d / #171615 (cues taken from reference works, not a fixed palette)

## Defining characteristics

- Dots placed at even intervals
- Vibration from juxtaposed complementaries
- Pure colours never mixed
- A framing effect from a dotted border

## Best used for

- Data-driven imagery that builds pictures from discrete points of colour
- Print and screen campaigns exploiting halftone and pixel aesthetics with a fine-art pedigree

## Research method

This entry records a historical style; derive the treatment from its sources rather than a fixed recipe:

- Precise, light sans set small, letting the dot field dominate
- An even, all-over lattice of dots; forms emerge only at viewing distance, with a dotted border as frame
- Unmixed complementary pigments in uniform touches; optical mixture instead of blended paint

## What to avoid

Avoid irregular, gestural dabs—once the dots lose their even discipline the optical mixture fails and the surface turns into loose Impressionism.

## Application checklist

Before calling a piece an application of this style, check it against the defining characteristics:

- [ ] Dots placed at even intervals
- [ ] Vibration from juxtaposed complementaries
- [ ] Pure colours never mixed
- [ ] A framing effect from a dotted border
- [ ] At least one reference work below has been studied directly
- [ ] The caution above ("What to avoid") has been addressed

## Related styles

- **Op Art (オプ・アート)** — Raises perceptual vibration and depth inside a still image through repeated line, form and value. → https://indexstyle.org/styles/op-art
- **Pixel Art (ピクセルアート)** — Treats the pixel as an honest unit, building clear form from limited resolution and palette. → https://indexstyle.org/styles/pixel-art

## Further study

- The difference between the terms Divisionism and Pointillism
- The colour theories of Chevreul and Rood
- The structural kinship with halftone printing

## Reference works

- Georges Seurat《グランド・ジャット島の日曜日の午後》1884–86 — Wikimedia Commons / Public domain — https://commons.wikimedia.org/wiki/File:A%20Sunday%20on%20La%20Grande%20Jatte%2C%20Georges%20Seurat%2C%201884.jpg
- Paul Signac《フェリックス・フェネオンの肖像》1890 — Wikimedia Commons / Public domain — https://commons.wikimedia.org/wiki/File:Signac%20-%20Portrait%20de%20F%C3%A9lix%20F%C3%A9n%C3%A9on.jpg
- Paul Signac《グロワ島のマグロ漁船団の祝福》— Minneapolis Institute of Art / Public domain — https://commons.wikimedia.org/wiki/File:Paul%20Signac%20-%20Blessing%20of%20the%20Tuna%20Fleet%20at%20Groix%20-%2062.36%20-%20Minneapolis%20Institute%20of%20Arts.jpg

## Source of record

- Tate — Art Terms: Neo-Impressionism — https://www.tate.org.uk/art/art-terms/n/neo-impressionism

## Machine surfaces

- JSON: https://indexstyle.org/api/styles/neo-impressionism
- Image-generation prompt (legally clean): https://indexstyle.org/styles/neo-impressionism/prompt.txt
- MCP: https://indexstyle.org/mcp (tools: search_styles, get_style, compose_styles; prompts: image-prompt, apply-style)

## 日本語

印象派の直感を光学理論で置き換え、混ぜない純色の点を並べて網膜上で混色させる方法。分割主義と点描の規律は、後の網点印刷、モザイク、ピクセルによる画像構成と同じ問題を先に扱っている。

特徴: 等間隔に置かれた点／補色の並置による振動／混ぜない純色／縁取りの点による額装効果
注意: 表面的な記号へ還元せず、時代・地域・技術・制作主体の文脈を確認する。