This video goes over accessibility considerations when creating charts in documents. Color contrast, avoiding using color alone to signify meaning, adding data labels and alt text are discussed.
Links provided on the last slide:
“Contrast Checker.” WebAIM, www.webaim.org/resources/contrastchecker/
“Contrast Ratio.” Siegemedia, www.siegemedia.com/contrast-ratio
Color blindness simulator:
“Color Blindness Simulator.” Colblinder, www.color-blindness.com/coblis-color-blindness-simulator/