About the tool
Calculate the APCA contrast level of two colors.
APCA, or Advanced Perceptual Contrast Algorithm, is a new approach to color contrast that aims to improve readability for everyone, including those with visual impairments. Unlike older methods, APCA takes into account human visual perception, making it a more accurate measure of how colors appear to different people.
This tool is built using the base APCA reference algorithm 0.0.98G-4g developed by Myndex Research and Andrew Somers.
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This free online tool is provided “as is” without any warranties, express or implied. Use of this tool is at your own risk. We do not guarantee its accuracy, reliability, or suitability for any purpose. This tool is not intended for mission-critical uses or any situation where failure could result in injury, loss, or damage. We disclaim any liability for any harm or damages resulting from the use or misuse of this tool. By using this tool, you agree to these terms.
