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About Colour Contrast Checker
Colour Contrast Checker shows the contrast ratio of a background and foreground colour and whether the pair passes AA and AAA for large and normal text. Colours can be adjusted through RGB or HSL sliders, swapped with one click and saved.
Example text can be previewed in a chosen Google font at large and normal sizes. The page links to its source code on GitHub, and it suits anyone checking text legibility for accessibility.
Strengths
- Clear AA and AAA pass or fail results
- Adjust colours with RGB or HSL sliders
- Preview text in Google fonts
Limitations
- Checks one colour pair at a time
- Licence of the published source is not stated in the research
Details
- Pricing
- FreeFree to use in the browser.
- License
- Proprietary
- Developer
- Pushedskydiver
- Platforms
- Web
- How it runs
- Web application
- Account
- Not required
- Best suited for
- Checking text and background colours for WCAG compliance
- Categories
- Color tools, Website testing
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to Colour Contrast Checker
Compare allSoftware that can replace Colour Contrast Checker for an important use case, and what changes if you switch.
WebAIM Contrast Checker
An online checker that tests foreground and background color contrast against WCAG AA and AAA levels.
WebAIM Contrast Checker separates results for normal text, large text and UI components, with alpha controls and shareable permalinks.
Contrast Ratio
A web tool that calculates the WCAG contrast ratio between a text color and a background color.
Contrast Ratio updates live as you type CSS color notations and handles semi-transparent colors, though its hosting page includes Siege Media marketing.
Colour Contrast Analyser
A free desktop app for checking foreground and background color contrast against WCAG, with eyedropper pickers.
Colour Contrast Analyser is an open source desktop app for Windows and macOS with screen-wide eyedroppers and WCAG 2.0 to 2.2 results.
Contrast Finder
A web tool that checks color contrast against WCAG and suggests close valid color pairs.
Contrast Finder is open source under AGPL-3.0, suggests valid nearby colors and can be self-hosted.
Accessible Colors
A web checker that tests text and background contrast against WCAG and suggests the closest passing colors.
Accessible Colors checks AA and AAA and suggests the nearest passing colors, following WCAG 2.0 rules.
Colorable
A web tool for testing the contrast of a text and background color pair against WCAG levels.
Colorable offers HSL sliders with reverse and random buttons in a minimal interface, without font previews.
WhoCanUse
A web tool showing how a text and background color pair looks to people with various vision conditions.
WhoCanUse adds previews of each color pair under various vision conditions, including situational cases such as direct sunlight.
Colour Contrast Checker as an alternative
Listings that name Colour Contrast Checker as an alternative.
Accessible Color Generator
A web tool that finds the closest accessible variation of a brand color for a chosen background.
Colour Contrast Checker gives AA and AAA pass or fail results with RGB or HSL sliders and Google font previews, instead of suggesting a nearby accessible color.
Similar software
Related functionality, not necessarily a direct replacement.
RandomA11y
A web tool that generates random color pairs meeting WCAG contrast requirements.
Coblis
A browser-based simulator that shows how an image looks to people with color vision deficiencies.
Leonardo
Adobe's web tool for generating accessible color themes and scales from target contrast ratios.
Accessible Palette
A web tool for building color systems with consistent lightness and WCAG contrast across hues.
Realtime Colors
A web tool that previews a color palette and font pairing on a realistic page layout as you edit it.
