WCAG
Feel free to contact me to suggest a resource.
![Screen copy of combinations of colors being tested for compliance with WCAG 2.0](https://a11y-toolbox.com/wp-content/uploads/2021/07/512_contrastgrid.png)
Color Contrast Grid by EightShapes
This online tool tests if the color combos are compliant with WCAG 2.0 minimum contrast. I like using it to test color combinations for buttons and text colors on different background colors.