Flat Design / Vector Minimalism vs Hard-Edge Painting
フラットデザイン / ベクターミニマリズム / ハードエッジ・ペインティング
Flat Design / Vector Minimalism comes from UI Expression and Hard-Edge Painting from Geometric Abstraction. Both are read here as style. They are reached for with some of the same intent, which is where they get confused.
Flat Design / Vector Minimalism
Reduces information to plain planes and color, portable across screens and media.
Hard-Edge Painting
Painting that keeps every boundary perfectly sharp and builds the picture out of flat planes of colour alone. Brushwork and gradation are excluded, so the edge of a plane becomes the only event. The precise edge obtained by masking is the direct ancestor of later flat design and vector work.
| Flat Design / Vector Minimalism | Hard-Edge Painting | |
|---|---|---|
| Era | 2010s– | 1959–1970s |
| Family | UI Expression | Geometric Abstraction |
| Kind | Style | Style |
| Cues | Uniform planes / Simple shapes / Few shadows / Clear color | Perfectly sharp boundaries between planes / Flat colour with no gradation / A few large planes only / The shape itself determining the support |
| Best used for | Light, understandable explanation · Large sets of consistent figures | Wayfinding in airports and hospitals where flat colour fields alone separate one system from another · Icons, interfaces and product exteriors where difference comes from edge and area alone, with no gradation |
| Type | A rounded sans-serif | One geometric sans, cut to the same edge precision as the colour, with no shadow |
| Composition | Simple silhouettes and clear hierarchy | Three or so fields, divided off any obvious fraction, the outer shape part of the composition |
| Material | Three to five colors; shadows only when they mean something | Flat opaque colour, the edge cut mechanically, with no overlap and no halo of light |
| Caution | Figures easily become generic. Define your own ratios, lines and color rules. | Feathering even one edge for depth brings back illusionistic space and the work becomes a picture of something, while sharpening edges and multiplying fields builds no tension and leaves a colour coded diagram. |