Squircle CSS Button

Free24 lines · no JS · WCAG AA large 3.7

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Theme

A real <button> carrying .btn-squircle — the preview is the stylesheet, not a picture of it.

States

default

hover

focus-visible

active

disabled

not declared

.btn-squircle {
  display: inline-block;
  padding: 14px 30px;
  border: none;
  border-radius: 22px;
  background: #f43f5e;
  color: #ffffff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: border-radius 0.25s ease, background 0.2s ease;
}
.btn-squircle:hover {
  border-radius: 14px;
  background: #e11d48;
}
.btn-squircle:active {
  border-radius: 28px;
}
.btn-squircle:focus-visible {
  outline: 2px solid #f43f5e;
  outline-offset: 3px;
}

Self-contained · MIT · no build step.btn-squircle

SolidRoundedMorphing

Implementation notes

About the Squircle CSS button

Squircle uses a clear, high-contrast treatment for primary product actions. Its rounded corners balance product-friendly softness with a clear boundary. The morphing details are included in the copy-paste CSS.

Usage

<button class="btn-squircle">Button</button>

Pair it with the CSS tab above — the class is self-contained.

Before shipping: keep the semantic button element, verify contrast on your actual background and add a visible:focus-visible state. If you retain motion, include a prefers-reduced-motion override.

Built with: HTML + plain CSS
Shape: Rounded
Exports: CSS, Tailwind, React
License: MIT · commercial use

Complete the look

Build the interface around this button

We matched its palette, surface, geometry and motion to a complete UI system — like composing an outfit, not browsing unrelated parts.

Style DNA · v1

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Pro preview

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