A practical starting point

Check colors before using them in an interface

Convert a color value for your stylesheet, check its contrast against the actual background, and avoid using color alone to communicate meaning.

3 steps to get startedSources reviewed
Use the color converter to move between common color representations. Pair that with the linked contrast guidance and a dedicated contrast check; format conversion itself does not measure accessibility.

Useful starting points

Tools and resources you can explore today. External services have their own terms and availability.

Color converterOn this site · Tool Color conversion guideOn this site · Guide

A practical way forward

  1. Start with a real foreground and background

    Write down both colors, not just an isolated brand swatch. Include hover, focus and disabled states where the colors change.

  2. Convert without changing the color

    Start with a three- or six-digit HEX value, or comma-separated RGB or HSL values. HSL saturation and lightness use percentages. Copy the value your stylesheet needs, then check opacity and background images in the actual interface.

  3. Verify readability and meaning

    Check text contrast with a contrast calculator and the linked criteria. Add labels or icons to important states instead of relying only on red or green.

Keep in mind

  • This tool converts color formats; it is not a contrast-ratio checker.
  • A readable palette alone does not establish that the whole interface is accessible.
  • Alpha channels and space-separated CSS color syntax are not supported by the current converter.

Sources, not guesswork

Background for this guide. Discussion and documentation are useful signals, not proof of demand or an endorsement of every service.

Planned · Research

Contrast-checked palette suggestions

Research only — not available yet. Would a palette that checks your actual backgrounds and interface states help your design process?

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All solutions

Make a photo smaller before uploading

Reduce a photo’s file size with a JPEG export, compare the result with the original, and check the destination’s size and format requirements.

Read the guide

Resize an image without stretching it

Calculate proportional image dimensions, decide whether to crop or fit, and check the final asset at the size where people will actually see it.

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Create a simple favicon for a new site

Create a small text-based browser icon, export PNG sizes, and check that it remains recognizable in a tab before adding it to your website.

Read the guide
AN IDEA IN RESEARCH

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