Flat Design / Vector Minimalism vs Neumorphism

フラットデザイン / ベクターミニマリズム / ニューモーフィズム

Both sit in UI Expression, so the question is not what they belong to but how they behave. Both are read here as style. They are reached for with different intent, which is the fastest way to tell them apart.

Flat Design / Vector Minimalism

Reduces information to plain planes and color, portable across screens and media.

Neumorphism

Makes background and controls one material, showing relief through soft shadow alone.

Flat Design / Vector MinimalismNeumorphism
Era2010s–late 2010s–
FamilyUI ExpressionUI Expression
KindStyleStyle
CuesUniform planes / Simple shapes / Few shadows / Clear colorSame-color surfaces / Two-direction shadows / Rounded parts / Low contrast
Best used forLight, understandable explanation · Large sets of consistent figuresConcept screens with few interactions · A soft, quiet product impression
TypeA rounded sans-serifA concise sans-serif
CompositionSimple silhouettes and clear hierarchyBig margins, few controls
MaterialThree to five colors; shadows only when they mean somethingPale ground, one light and one dark shadow, rounded corners
CautionFigures easily become generic. Define your own ratios, lines and color rules.Contrast failure comes easily. Mark key actions and states with color and outline too.

IndexStyle