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Embedded Images and High Contrast Mode for Web Accessibility

I discussed the discussion of high contrast mode and background image sprites, but I have a simpler question about inline images and HCM. For low visibility users without an HCM screen reader, will it be difficult for them to see the embedded image because it may not have enough contrast? Or are they expected to use the browser plugin to replace the inline image with its alt text?

As far as I understand, users working on the screen will benefit, because the alt text is read? But what about low vision users without a screen reader?

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For low visibility users without an HCM screen reader, will it be difficult for them to see the embedded image because it may not have enough contrast?

Sometimes in high contrast mode, images change as the color is determined, so the white background in the image becomes black. I do not know if this depends on the type of image or something else. There are a number of obstacles that are associated with color washing, and it would be quite difficult to cover all the bases at 100%. I would say that it’s not bad to create images with 4.5: 1 color ratios as defined in WCAG 2.0 to cover as many bases as you can.

Or are they supposed to use a browser plugin to replace the embedded image with their text?

I do not know who does this.

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