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Colour contrast analyser mac code#
Colour contrast analyser mac free#

Colour contrast analyser mac free#

LicenseĬolour Contrast Analyser (CCA) is Free Software: You can use, study share and improve it at your If you have any questions, feel free to open an issue here on GitHub. If you want to contribute, please send a pull request and someone will review your code. Please search the existing issues before submitting to If you have an idea for a new feature, or if you found a bug, please submit a GitHub issue. See the known issues for the latest CCA release and confirmed bugs.Support for alpha transparency on foreground colours.Several ways to set colours: raw text entry (accepts any valid CSS colour format), RGB sliders, colour picker (Windows and macOS only).For the previous, non-Electron versions ("CCA Classic"), see the CCA-Win and CCA-OSX repositories.įor further information, see TPGi's Colour Contrast Analyser resource page.

Colour contrast analyser mac code#

This repository contains the source code for the new Colour Contrast Analyser (CCA) builds for Windows and macOS based on Electron. Orange and red can be difficult to work with because the color is neither very dark or very light and so is hard to contrast to a sufficient level.The Colour Contrast Analyser (CCA) helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators. Tests on Different Values of Gray on BlackĬyan/White Tests on Different Levels of Cyan on White Cyan Level NOTE: "Large text"=18 pixels, or 14 pixels bold Tests on Different Values of Gray on White Grey Level If your color scheme fails one of the above tests, it’s likely that only a few minor adjustments will be needed to bring the color values to a more acceptable level. See the Working with Bright Colors page for more details. red/green, blue/orange, etc) fail the contras test because they are similar in values in terms of lightness darkness. Colour Contrast Application (Windows and Mac).Juicy Studio Accessibility Toolbar for Firefox.Juicy Studio Color Contrast Ratio Analyzer.The following links allow developers to test contrast between two Web color codes. Logotypes: Text that is part of a logo or brand name has no minimum contrast requirement.

Incidental: Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement.

Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least 3:1.

The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following: (Level AA) NOTE: If your target audience is mostly low vision, then a ratio of 1 to 7 is recommended. The WCAG 2.0 guildine 1.4.3 recommends the following luminosity ratio standard of 1 to 4.5 for main text and 1 to 3 for large-scale text (18 points+, or 14 points+ bold). Usually a low number or ratio indicates too little contrast. In most online tests, you enter in the hexadecimal color code for the foreground (text) and background colors, and the tester generates a numeric result. If you plan to use a subtle color palette, it is recommended that you use a color analyzer to ensure there is sufficient contrast. Examples include contrasting light grey versus middle grey, middle pastels versus darks, or white versus light cyan (blue-green). However, some modern designs are so "subtle" that the contrast can actually be insufficient for some readers. Other colors can be used-such as navy, dark green, or maroon for darks, and pastels for lights-to lessen the contrast. Maximum contrast is black versus white, but this combination can be considered too overwhelming (it might cause glare). An important aspect of color on the Web for both low vision and colorblind users is sufficient contrast between foreground (text or graphics) and the background.