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Adding enough color contrast

Updated: Sep 29, 2020

color contrast

Providing enough contrast between text or graphics and their background helps users, specially people with moderately low vision (who do not use contrast-enhancing assistive technology), to read and see things effortlessly.

In the WCAG recommendation, the contrast is calculated in such a way that color is not a key factor so that people who have a color vision deficit will also have adequate contrast between the text or graphics and the background.

According to WCAG 2.0:

o level AA:

WCAG 2.0 level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Large text is defined as 14 point (typically 18.66px) and bold or larger, or 18 point (typically 24px) or larger.

WCAG 2.1 requires a contrast ratio of at least 3:1 for graphics and user interface components (such as form input borders).

o level AAA:

WCAG Level AAA requires a contrast ratio of at least 7:1 for normal text and 4.5:1 for large text and graphics.

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#accessible_design #color #color_contrast #ux

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