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Text Contrast Color in CSS: When contrast-color() Beats Manual Theming at 4.5:1

Year: 2026

Type: preprint

Abstract: Use contrast-color() on solid tokenized backgrounds only when its black-or-white pair proves 4.5:1 for normal text; otherwise use manual tokens. Independent technical note mirroring the canonical version: https://userhero.io/blog/text-contrast-color-in-css-when-contrast-color-beats-manual-theming-at-451.php

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24059107

Author: Ellison, Maya

Language: English

Topic: Digital Accessibility for Disabilities

Subfield: Human Factors and Ergonomics

Field: Social Sciences

Domain: Social Sciences

Open Access status: green

OpenAlex ID: W7225594505

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