Disclaimer
Disclaimer
What the numbers on this site are good for, and where they stop being enough on their own.
The short version
ColorFinders's tools are accurate for what they measure, and they say so when a result is approximate. They are meant as guidance for design work. They are not professional advice, and they do not certify compliance with anything.
Colour values
A picked colour is the exact value of one pixel as your browser decoded the image. That is precise, but it is not always the colour the image's author intended:
- Browsers and operating systems can decode the same file differently when it carries an embedded colour profile, or when the display is wide-gamut.
- Lossy formats such as JPEG and WebP change individual pixels. Sampling a flat-looking area can return slightly different values a pixel apart.
- CMYK, LAB and the nearest CSS colour name are conversions, not measurements, and are labelled as approximate wherever they appear. CMYK in particular is uncalibrated and is no substitute for a colour-managed print workflow or a press proof.
Contrast and accessibility results
The contrast checker applies the WCAG 2.2 contrast formula correctly. A passing ratio is one requirement among many, though: it does not make a design accessible by itself, and nothing on this site certifies that a product meets WCAG, the ADA, the European Accessibility Act, Section 508 or any other law or standard. For a legal or contractual obligation, get a qualified accessibility audit.
Colour-blindness simulation
The simulator uses published, peer-reviewed models of colour vision deficiency. Those models describe typical cases. Real colour vision varies from person to person and with the severity of the condition, so treat the previews as a way to spot problems, not as what any particular person sees. It is not a medical or diagnostic tool.
Other generated output
Palettes, gradients, mixes and CSS filter chains are generated suggestions. The filter generator searches for a close match and reports how close it got; it does not always find an exact one. Check any output in its real context before relying on it.
Guides
The written guides explain colour concepts in good faith, but standards and browser support change after a page is written. Where it matters, check the current specification.
External links
Links to other sites are provided for convenience. ColorFinders does not control and is not responsible for their content.
No liability
The tools are free and provided as is. You use their output at your own risk; the terms of service set out the limits of liability in full.
Contact
Found a result that looks wrong? Please say so: hello@colorfinders.com.