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Focus Ring (:focus-visible) Generator

A visible focus indicator is what lets keyboard and screen-reader users see where they are on a page, and it is a WCAG requirement, yet it is one of the first things people remove with a careless outline: none. This tool helps you design a focus ring you will actually keep. Adjust the ring color, thickness, offset, and style, and watch it applied live to a real button, text input, and link, with the focus state shown always-on so you can judge it without tabbing around. Crucially, it checks the ring color against the surface behind it for the WCAG 1.4.11 non-text contrast requirement of 3:1, the rule most focus-ring snippets ignore, and tells you pass or fail instantly. Pick from three techniques: a plain outline, a box-shadow ring, or both together (which keeps a visible indicator in Windows high-contrast and forced-colors modes). The output uses :focus-visible so the ring shows for keyboard focus without flashing on every mouse click, and includes the safe reset for older browsers.

Ring vs surface contrast (WCAG 1.4.11)

0:1

Focus indicators need at least 3:1 against adjacent colors.

Focused link

Focus styles are shown always-on so you can judge them without tabbing.

CSS

How to Build an Accessible Focus Ring
  1. Set the colors - Choose the ring color and the surface color it will sit on with the color pickers or hex fields.
  2. Shape the ring - Drag the thickness and offset sliders and pick a solid, dashed, or dotted style; the preview elements update live.
  3. Choose a technique - Select Outline, Box-shadow ring, or Both; pick Both for a ring that survives forced-colors mode.
  4. Check the contrast - Confirm the ring-versus-surface ratio shows Passes 3:1; if it fails, darken or brighten the ring color until it passes.
  5. Copy the CSS - Copy the generated :focus-visible rule and the focus:not(:focus-visible) reset into your stylesheet.
Why This Tool?
 Searching for focus ring styling returns excellent articles from MDN and CSS-Tricks, but no tool that designs the ring and verifies its accessibility at the same time. The contrast check is the part that matters and the part people skip: WCAG Success Criterion 1.4.11 requires user-interface components, including focus indicators, to have a contrast ratio of at least 3:1 against adjacent colors. A pretty blue ring on a blue button fails that, and you would never know without measuring. 
 Using :focus-visible instead of plain :focus is the modern best practice because it shows the ring for keyboard and programmatic focus while suppressing it for mouse clicks, which is the behavior users expect. The generator pairs it with a :focus:not(:focus-visible) reset so the experience degrades cleanly in browsers without focus-visible support. The Both technique combines an outline with a box-shadow because outlines remain visible in Windows high-contrast and forced-colors modes where box-shadows are stripped, so your indicator never disappears for the users who rely on it most. 
 Keyboard accessibility is not optional, and a focus ring is the cheapest way to deliver it. This tool turns it into a deliberate design decision with a measured pass or fail, rather than a default you either accept or destroy.