Methods for Contrasting Text Against Backgrounds

It started with seeing a recent Pen of Mandy Michael's text effects demos. I'm a very visual creature, so the first thing I noticed was the effect, not the

a) The original image with contrast problem, (b) the resulting image

Contrasting Simplicity: Embracing Black Text on White Background

Particletree » Calculating Color Contrast for Legible Text

Methods for Contrasting Text Against Backgrounds

Color Contrast - Accessibility by Design

Contrast text against background (pure CSS)

Methods for Contrasting Text Against Backgrounds

Contrast text against background (pure CSS)

How to Change Text and Background Color in CSS

Effective Use of Color – Creating Accessible Content – Instructional Design That Works