In the never ending feud between designer & accessibility advocates. How many times have you experienced your design coming back, with comment of Color Contrast test failed. Not that designers are heartless biased people with no concern.

While there are lots of resources on the web to check color contrast. I’ve compiled a few, though I use Vischeck & Colour Contrast Analyser (Vision Australia) quite often.
• Colour Contrast Check
• Colour Contrast Visualiser
• Colour Contrast Analyser Firefox Extension
• Colour Contrast Analyser (Vision Australia)
• Vischeck