NanoBananaで描く『コラージュ』イラスト｜色を操るプロンプト6選【画像生成AI / AIイラスト / AIアート / AI活用 / GoogleGemini】

おはようございます。Kinuです。
遊びに来てくださり、ありがとうございます✨

今日は、Nano Banana 2とNano Banana Proの両方で使用できる、『コラージュ』をテーマで創作したプロンプトをご紹介します。

一つの画像に複数の要素（モチーフ）を取り入れることができるのが、コラージュの良さだと思います。AIイラストで創作を楽しんで頂けるよう、色んなモチーフをちりばめてみました。

お好きな色味にアレンジして、日々の創作に役立てていただけるとうれしいです✨

▼AIツールをこれから学びたい方向け
［Nano Banana 2の使い方］

▼他の世界観も覗いてみたい方はこちら
［AIイラスト　プロンプト集］

◆オススメのプロンプト6選

「押し花、破れた古紙、フィルムの切れ端、タロットカード」
多様なモチーフを画面に散りばめつつ、プロンプトで「使う色を2〜3色だけ！」と制限をかけることで、散らばった要素がまとまります。

①陽だまりと植物（ボタニカル・コラージュ）

Strictly limited 2-color palette: Vibrant Yellow and Fresh Yellow-Green only. (masterpiece, best quality, highly detailed anime illustration), 1girl, upper body shot, high-fashion editorial anime style. A charming girl with a neat braided updo, striking an elegant pose with a soft, gentle yurufuwa smile. She wears a meticulously tailored yellow-green academic blazer transitioning into flowing, asymmetrical vibrant yellow organza printed with botanical patterns. The artwork is an immersive multi-layered mixed-media digital collage with a tangible thick art paper and pressed flower aesthetic, visible raw material edges, and pervasive halftones and dots. The background is a dense array of natural meadow elements: antique yellow-green botanical maps, torn yellow parchment, fresh washi paper patterns, and blank botanical tags. Integrated details include stylized geometric leaf motifs, floating yellow flower petals, and glowing warm light filaments. High-contrast, striking minimalist color impact, sharp focus, clean lineart, no text.

②魔法と女騎士（タロット風コラージュ）

Strictly limited color palette: Deep Royal Blue, Crimson Red, and natural fair skin tone only. (masterpiece, best quality, highly detailed anime illustration), 1girl, upper body shot, high-fashion editorial anime poster style. A sophisticated girl with a sleek short bob, beautiful fair skin, maintaining a soft, gentle yurufuwa smile. She wears a structured deep royal blue military-style cape layered over flowing crimson red silk. Creative, multi-layered mixed-media digital collage with a tangible parchment and velvet texture, visible raw torn edges, halftones and dots. The background is a dense array of magical knight elements: deep royal blue antique tarot cards, torn crimson red royal decrees, and celestial map fragments. Integrated details include stylized sword hilts, crimson red wax seals, and deep royal blue geometric magic circles. High-contrast, striking minimalist color impact, sharp focus, clean lineart, no text.

③水星の植物（水彩風コラージュ）

Strictly limited color palette: Fresh Yellow-Green, Pale Light Blue, and natural fair skin tone only. (masterpiece, best quality, highly detailed anime illustration), 1girl, upper body shot, high-fashion editorial anime style. An ethereal girl with long flowing wavy hair, beautiful fair skin, exhibiting a soft, dreamy yurufuwa smile. She wears a structured fresh yellow-green tailored blazer transitioning into asymmetrical, flowing translucent pale light blue organza. Creative, multi-layered mixed-media digital collage with a tangible watercolor paper and pressed botanical texture, visible raw torn edges, halftones and dots. The background is a dense array of aquatic and botanical elements: pale light blue ocean current maps, torn fresh yellow-green fern encyclopedia pages, and blank specimen tags. Integrated details include floating paper-cut jellyfish, pale light blue watercolor bubbles, and fresh yellow-green geometric leaf motifs. High-contrast, striking minimalist color impact, sharp focus, clean lineart, no text.

④トランプの不思議な世界

Strictly limited 3-color palette: Velvet Red, Cream White, and Deep Purple only. (masterpiece, best quality, highly detailed anime illustration), 1girl, upper body shot, high-fashion editorial anime style. A captivating girl with voluminous wavy hair and a tiny top hat, wearing a soft, gentle yurufuwa smile. She wears an avant-garde outfit featuring a structured tailcoat with checkerboard lapels, transitioning into asymmetrical fabric that looks like melting playing cards. Surreal, whimsical mixed-media digital collage with a tangible playing-card cardboard and velvet texture, halftones and dots. The background features fairytale elements: warped checkerboard floor patterns, scattered vintage playing cards, vintage tea tags, and antique dictionary pages. Integrated details include melting pocket watches, ornate keyholes, and small teacup silhouettes. High-contrast, striking minimalist color impact, sharp focus, clean lineart, no text.

⑤アンティーク・ティータイム

Strictly limited 2-color palette: Dusty Pink and Antique Brown only. (masterpiece, best quality, highly detailed anime illustration), 1girl, upper body shot, high-fashion editorial anime style. A nostalgic girl with long wavy dusty pink hair, striking a poised pose with a soft, gentle yurufuwa smile. She wears an avant-garde layered outfit: a structured antique brown velvet corset layered with asymmetrical flowing dusty pink torn silk and delicate lace. The artwork is an immersive multi-layered mixed-media digital collage with a tangible aged parchment and cracked porcelain texture, visible adhesive marks, and pervasive halftones and dots. The background is a dense array of nostalgic tea time elements: torn brown pages of antique botanical books, vintage pink tea labels, wax seals, and blank stylized index tabs. Integrated details include miniature vintage teacups, scattered dried pink petals, and stylized brass spoons. High-contrast, striking minimalist color impact, sharp focus, clean lineart, no text.

⑥シネマティック・フィルム

Strictly limited 3-color palette: Vintage Sepia, Stark White, and Blood Red only. (masterpiece, best quality, highly detailed anime illustration), 1girl, upper body shot, high-fashion editorial cinematic anime style. A sophisticated girl with an asymmetrical short haircut, featuring a soft, gentle yurufuwa smile. She wears a structured, vintage detective trench coat layered with delicate, asymmetrical lace and torn silk elements. Gritty yet elegant mixed-media digital collage with a tangible photographic paper and celluloid film-emulsion texture, halftones and dots. The background features cinematic thriller collage elements: classified document pages, scattered negative film strips, burnt polaroids, and typewriter text fragments. Integrated details include stylized camera lenses, red string markers, and abstract light leaks. High-contrast, striking minimalist color impact, sharp focus, clean lineart, no text.

▼さらに本格的なコラージュ作品を作ってみたい方へ
今回の「色遊び」を楽しんでいただけた方には、こちらの記事もおすすめです。 「FASHION」「SPACE」「THEATER」など、より複雑でデザイン性の高い10のテーマを完全収録。

さらに、自分好みにアレンジできる『モチーフのキーワード集』や、一瞬で世界観を変える『魔法のカラーパレットシート』も公開しています。

今よりもっとデザインを楽しみたい方はぜひ覗いてみてくださいね✨

◆最後に

今回のイラストの中で、あなたの心に触れる一枚が、ひとつでもあれば嬉しいです。

私にとってのプロンプトは、単なる命令文ではなく、AIという鏡を通して自分の内面を探るための「対話の記録」です。

ここで紹介したプロンプトは、ぜひあなた自身の感性で、自由にアレンジして使ってみてください。

ほんの少しの色指定を変えるだけで、また新しい世界が広がっていくはずです。 あなたのイラスト制作に、この「設計図」が少しでもお役に立ちますように。

最後までご覧いただき、ありがとうございました✨