SVG Graphics are great in general because they are both dynamic and also very small. This means you can have a large image "visually" yet the actual size in bytes will be quite small. Much smaller than any other image type. Also, as they are vector based, you can increase the size visually and you won't get that "stretched" and "pixelated" look and feel.
Some of the key accessibility standards you should be aware of as you start your accessibility journey.
Jenny Wincek joins #IDIODC to talk about the Trusted Tester program, as well as some of the basics of 508 and WCAG compliance, and why accessibility is important.
These tools help with understanding problems with color blindness and contrast and preventing these problems with your content.
.Gov site with great resources regarding color and accessibility