What’s your favorite color-checking tool? All you need to do is key in your background and foreground color values in hexadecimal units (for example, a white background is #ffffff) and it will subsequently tell you whether the combination passes WCAG 2.0 contrast recommendations. Juicy Studio has a nifty web tool for analyzing background and foreground color contrast ratio. Luminosity Colour Contrast Ratio Analyser You use the RGB value of your colors as inputs, and it outputs the brightness and color difference of your values are, as well as whether the combination is conformant with W3C/WCAG recommendations. Hewlett-Packard has a simple web tool on their site for evaluating the color contrast characteristics of two colors. There’s a user guide on the site to help you get started with it quickly, as well as downloads available in several languages. This desktop application (for Windows XP and Vista) is designed for examining your foreground and background color combos for color contrast and brightness. You simply place your web page’s web address into it, select whether you want to see only errors or a full report, press “Check!” and it outputs a nice table of the results. AccessColorĪccessColor is a web tool that checks the color contrast and color brightness of foreground text to background color. Color Laboratory is very easy to utilize and only requires three basic steps, all of which are outlined in their quick start guide. This uncomplicated web tool allows you to discover color combinations and how they might look like to a person with color blindness. It’s also great for checking out the color contrast of other websites. ![]() It’s a nifty tool to add to your development workflow as you test your work. This Firefox add-on developed by Juicy Studio allows you to conveniently examine colors of text DOM nodes on web pages. Please note that Sim Daltonism requires Mac OS X 10.2.8 (or later versions). The tool allows you to simulate one of the eight supported color blindness conditions such as Monochromacy and Protanopia (a dichromat condition). ![]() Sim Daltonism is a vision deficiency simulator for the Mac OS X. This app requires the Windows operating system and it has only been tested on 2000 and XP. This desktop-based tool by the Web Accessibility Tools Consortium (WAT-C) is intended for checking color combinations to determine if they provide satisfactory color visibility. Vischeck’s example page clearly explains how the tool works with demonstrations to highlight what it evaluates. It has several options for usage: you can run it on a web page, upload an image file (like a design mockup), or download a Photoshop plugin for local testing. Vischeck simulates what things look like to people who are colorblind. It’s a great tool for visualizing a web design’s color contrast and readability. Use GrayBit to convert a web page to grayscale it will even convert web images on that page. One way to check if a design has sufficient color contrast is by converting it to grayscale and seeing which parts are hard to read. At the bottom of the tool’s web page, you’ll see simulations for particular forms of color blindness. To test and tweak color choices, simply move your mouse around the color wheel and evaluate for readability. This tool is a convenient way to experiment with various color combinations: it helps you rapidly envisage what color schemes look like. If you’re concerned about web accessibility, it’d be a good idea to have this tool around during the design phase of your projects. It’s a wonderful tool for picking your website color palette. This tool is an Adobe AIR desktop application for visualizing appropriate color combinations. Note that Windows and Linux users require Java 6. The creators of the tool also have a Design Tips section on their site that shares a couple of useful whitepapers on color accessibility. It’s easy to use: just plug in your web page’s URL, press “Check!”, and it outputs a nice tabular report for all elements.Ĭolor Oracle is a desktop tool available for Mac, Windows, and Linux operating systems: it simulates color vision deficiencies. ![]() It’ll check all stacked web page elements based on W3C’s WCAG recommended luminosity contrast ratio and color brightness. In this article, you’ll read about excellent free tools for checking to see if the colors you are using are consistent with standard color contrast, brightness, readability, and accessibility best practices.Ĭheck My Colours is a web-based tool for checking your website’s foreground and background colors. In addition, ensuring that the colors you select are viewable by persons with vision deficiencies such as color blindness is a good practice to follow when thinking about web accessibility. Making sure that you choose the appropriate colors for a design is very important for readability.
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